Ultimately a full-grown Oscar Fish requires a large tank. In essence, the jewel cichlid is not an aggressive fish. This means that you do need a fairly strong filter for them. You should also keep driftwood and rocks which will provide them more hiding places. Convict cichlid can grow up to 6 inches and they are active fish so they can easily survive in the Oscar Fish tank and will not get eaten by the Oscar Fish. It is also known for its aggressive behavior. This can be reassuring for your Oscar, who is put at ease and becomes less hostile. Oscar fish in the wild live in fairly neutral waters when it comes to acidity. No, as mentioned earlier, Oscar Fish can get pretty large and it grows very quickly. They are very peaceful fish, and they do not get in the way of larger fish as well. About 2 to 3 inches of sand as substrate should be fine. They are black with red tails. (Are They Friendly?). Soft sand that your Oscars can dig around in is what you need, and to make the aquarium look good with brightly colored Oscars, getting either white, yellow, or black aquarium sand is recommended. Moreover, their tendency to dig for food can also dislodge debris in the substrate. Besides, Green terror belongs to the Cichlids family which are known for their aggressive behavior and Green terror is no exception. Ideally, 4 or 5 of bala sharks together would be great. Fish require oxygen to survive in fish tank. Jaguar cichlid can grow as tall as 24 inches so it requires a large tank of at least 125 gallons. Oscar fish have personality and keeping some tank mates with oscar fish is recommended to encourage social interactions. The Jack Dempsey fish is not an easy fish to keep in your tank. The ideal pH range for Oscar Fish is between 6-8 and the ideal hardness level is between 5 to 20 KH. The ideal water parameters for Silver Dollar are quite similar to that of Oscar Fish so you can easily keep them together in the same tank. 5 Jun. In this guide, we will look at the fish types that can be excellent tank mates for your Oscar and some species that dont. Therefore, the minimum recommended tank size for a single Oscar fish is 55 gallons. Oscar Tank Mates - Alive Aquarium They would be able to stay away from each other and just defend their own spaces. It will provide a sufficient space to form healthy colonies of beneficial bacteria that will help to keep nitrogen compounds under control and keep your tank clean and clear. Feature Image Credit: Slowmotiongli, Shutterstock, Goldfish Growth: Average Size & How Big They Can Get, Is Your Goldfish Turning White? It can and get as big as 13 to 14 inches in captivity. Moreover, they grow up to 6 inches and hence are unlikely prey for Oscars. 9 Ways to Lower Ammonia Level in Aquarium and Get Rid of it. That is when they can turn aggressive and it might be a good idea to keep them separate from other fish. The jewel cichlid originates from Africa the muddy rivers in central Africa. It can get as large as 7 inches so it will not fit into the mouth of your Oscar Fish and will not get eaten. Balloon Molly fish prefers water hardness of around 10-25 dGH. Most of them are predators towards smaller fish and other small creatures in the tank, and that is the only consideration you need to keep in mind with the cichlasoma. So, for keeping 2 Oscar Fish in a tank you will require at least a 75-gallon tank. This is a bottom dweller fish and spends most of its time near the substrate. Black Banded Leporinus 12. I created Aquagoodness to help beginners get started with the hobby and to share my experience. So, make sure you have sufficient ornaments and rocks in your tank to give this creature ample hiding space. Primarily, you should feed them cichlids flakes and pellets. Bright colored and stunning, Gold Severum Cichlid is more peaceful than any of our other recommendations and can thrive in community tanks. read more, Home Freshwater Oscar Fish 15 Best Oscar Fish Tank Mates Full List of Compatible Fish. They can live for up to 10 years. 15 Best Oscar Fish Tank Mates - Full List of Compatible Fish Remember that for a tank that less than 100 gallons, a single Oscar is enough. So, without further ado, lets dive right into it! So you can easily keep them in the same tank. If you notice the low temperature in your Oscar Fish tank then you can introduce a heater into the tank to raise the temperature. However, most people would recommend giving a single adult Oscar fish even more room, up to 75 gallons if possible. Tank mates for Oscar 55g. oscar tank mates 125 gallon - urzedowski-przewierty.com.pl It belongs to the Cichlids family and it is moderately aggressive so they can hold their own against Oscar Fish. Silver Dollar is omnivorous and their diet is mostly herbivorous. Hello Everybody, I'm looking for advice on some stocking ideas for my 125 gallon tank. As it is a bottom dweller fish, it will spend most of its time near the bottom of the tank and will not bother your Oscar Fish. Also, because these fish tend to be rambunctious, you will want to consider getting an external canister filter that is relatively safe from harm. An Oscar tends to bully its tank mates, so you need an equally aggressive creature. Usually, Pleco can get very large. Therefore, you will need a tank of 125 gallons or more to give adequate space to both the fishes. Its pH tolerance range is between 5.5 to 7.5 and the hardness tolerance range is between 4-18 KH. And providing a larger tank will help to reduce aggression among Oscar Fish. Yes, you can keep to Oscars in a 75 gallon tank if they are small in size i.e. Remember, Oscar fish have personality and every Oscar Fish is different from the other. These fish are quite large, as they can grow to up to 24 inches in size. When it comes to selecting tank mates for your Oscar, there is one crucial thing that you need to keep in mind. But if you have a small tank or if you have overstocked your tank then nitrogen compounds levels can spike pretty quickly. There are a few signs that suggest low oxygen levels like the fish coming on the surface gasping for air, rapid gills, fish moving around less. The best you can do is shift the Green Terror to a separate55-gallontank. Jack Dempsey 6. While looking for a tank mate for your Oscar, ensure the tank is large enough to house both fishes. Parmesany; Sep 19, 2022; Oscar Cichlid Forum; Replies 7 Views 180. I hope youll find the content on my site helpful. So the ideal water conditions for Pleco are very similar to that of Oscar Fish so you can easily keep them both together. All these things make the convict cichlids a good choice for tank mates of Oscar fish. Jack Dempsey can grow up to 15 inches. The ideal tank size for Silver Dollar is 75 gallons. Mostly you should feed them fresh live food like Crabs, Shrimps, Earthworms, etc. And to juvenile Jack Dempsey, you can feed 2-3 times per day. No, you should not keep Oscar Fish in a 10 gallon tank. They are great fish even for beginners, though. These water parameters are similar to the ideal range that an Oscar Fish prefers. In The wild, it feeds on plant leaves and algae. Its pH tolerance range is between 7 to 8.7 and the hardness tolerance range is between 10 to 15 GH. They do not do very well in high acidity or alkaline waters. Severum Cichlid 8. Due to their temperament and potentially aggressive behavior towards other fish, the Oscar fish should only be kept by the most avid and experienced fish tank keepers. The ideal water temperature for Jaguar cichlids is between 77 to 97 Fahrenheit. This fish is very territorial and it will form territory in your tank. Oscar fish are a species of cichlid, and as a whole, these fish actually do quite well when kept on their own. So, if we are talking about a 125-gallon tank, your filter should be able to process at least 375 gallons per hour, although even more is better. In the wild, it lives in the area where there are strong currents so you should try to emulate the same and use a powerhead to create a strong current in your tank. People usually consider Pleco herbivorous and feed them mostly plant-based diet. Besides, Blue acara can grow relatively large so they will not fit into the mouth of your Oscar Fish. AquariumFishCity.com is supported by our readers. In a 55 gallon tank Oscar Fish can get up to 9 inches. Their diet mostly consists of plant-based foods and they will feed on the algae in your tank and help to keep your aquarium clean. They are however known for being quite aggressive and territorial. Pleco is the best cleaner fish you can keep in your Oscar fish tank. I have two angels, three EB acaras, one EB jack Dempsey, two German rams, 5 yoyo loaches, and a pleco. So they will not bother each other and can easily live in the same tank. I created Aquagoodness to help beginners get started with the hobby and to share my experience. So this is everything you need to know about Oscar Fish tank size. They can also become quite aggressive and territorial if their space is threatened. 7 Causes of Aggressive Goldfish Behavior & How to Stop It, 5 Great Tank Mates for Porcupine Pufferfish (Compatibility Guide 2023), What Happens When You Overfeed A Fish: 11 Issues. But this doesnt mean that they cannot coexist with other tank species like the Oscar fish, but it simply means that they should be kept by experienced tank keepers and people who know what they are doing. All the content on this site is provided for informational and entertainment purposes only and must not be used as an alternative to seeking professional advice from a veterinarian or other certified professional. Despite its name, Green terror doesnt have only green color. Jack Dempsey is also known for their aggressive behavior so they can hold their own against Oscar Fish. less than 10 inches. If this is the case, then you should get a tank divider or a separate tank altogether. So you should make sure that your tank contains optimum oxygen levels. Bichirs are another good tank mate for your Oscar Fish. But they should be fine if they have enough space with the Oscar fish. Angel fish will not be able to adequately defend themselves against Oscars. Although blood parrots are non-aggressive, they will defend themselves if get bullied, so it is ok to keep them with Oscars. They are brightly-colored fish that can be used in your tank to add some color. As an Amazon Associate I earn from qualifying purchases. oscar tank mates 55 gallon - Oscar Fish Advice Forum: Tiger Oscar (1/1)55 Gallon Cichlid Tank Setuphere is is again next too an Aro for a bit size comparis. Most of these species are found in South America and its regions. Though they are omnivorous, their diet mostly consists of meaty food. Therefore, you could house 2 Oscars in a 125-gallon tank. And for every new addition, you will require an extra 20 to 30 gallons. They are currently with 4 Severums, 8 Silver Dollars, an EBA, and a Chocolate Cichlid These beneficial bacteria form their colonies in the substrate and in the filter of your aquarium. This is quite warm, so if you live in an area where the ambient air temperature does not keep the water warm enough, you will have to invest in a decent aquarium heater. Oscar Fish can grow larger up to 20 inches if you provide it larger tank. The minimum tank size requirement for a single Firemouth cichlid is 30 gallons. Bichir is one of the best tank mates for Oscar Fish. So they will not bother your Oscar Fish during the day. They can grow to about 20 inches in size and can live to up to 15 years if cared for properly. They can jump out of the tank so you should always keep a lid on your aquarium. Oscar fish can be quite messy. You should also feed them large vegetable flakes. The ideal temperature range for Jack Dempsey is between 72-86 Fahrenheit. So the ideal water parameters range of Bichir is similar to that of Oscar Fish. Given their aggressive nature, they can stand up to Oscars, when necessary, as long as both the fishes are of similar sizes. Many people have confusions and there are a lot of conflicting opinions on the internet about tank size for Oscar Fish. Dec 29, 2020. Of course, like most other Cichlids, they have a prickly nature, and you need to be vigilant if you choose to keep them with tank mates. They can be aggressive if they are kept with other knife fish and tend to be quite shy fish. The filtration I'm planning is two fx6 filters and loads of plants growing out of the top of the tank including . Tank Mates. It is actually recommended to keep at least two Oscar Fish to promote social interaction. For one Oscar Fish, you will require at least a 55-gallon tank and for every new addition of Oscar Fish you will require an extra 20 to 30 gallons. Out here, we have listed the best tank mates for your Oscar. Beneficial bacteria help to keep harmful nitrogen compounds in control. So dont get surprised if you found your Oscar Fish is not bothering any of fish no matter what fish you keep with it. Its pH tolerance range is between 5.5 to 7.5 and it can tolerate hardness up to 20 GH. Blue Acara is a very hardy fish and can tolerate a wide range of water parameters. This fish is quite aggressive and it can hold its own against Oscar Fish. Oscar Fish can do just fine without any tank mates. A 125-gallon aquarium is preferred to give your fish more room to swim and to keep water parameters balanced. Now dont be fooled by the name these fish are not sharks. So you can keep Green terror with Oscar Fish if you just manage to keep the temperature within the ideal range. I've been considering Firemouth Cichlids, Bala Sharks, Iridescent Sharks, Gars, and Clown Loaches as possibilities. Thats why they are also known as poor mans discuss. They are not particularly complicated to care for or even fussy eaters, but their aggressiveness can become a problem over time. Parmesany Albino/Lutino Oscar ?Ich? To keep the water clean and clear you should use a large canister filter and a hang on the back filter for the breeding tank. It is a pretty hardy fish and it is very easy to care for. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'aquariumfishcity_com-large-mobile-banner-2','ezslot_6',135,'0','0'])};__ez_fad_position('div-gpt-ad-aquariumfishcity_com-large-mobile-banner-2-0');Most Bichir species are wonderful tank mates for Oscars, but Ornate Bichirs (Polypterus ornatipinnis) are usually preferred because of their unique eel-like bodies and large size. They are perhaps one of the most beautiful fish and they swim so gracefully that it would be hard to imagine them being an aggressive fish. Your email address will not be published. In the aquarium, primarily you should feed them Cichlids flakes and pellets. Tank mates for Oscars | AquariaCentral.com Silver Dollar fish can grow up to 6 inches and as they are schooling fish you should keep them in at least a group of five. Also, there is an overlap between the ideal water parameters of Severum cichlids and Oscar Fish so you can keep them together in the same tank. So they can eat whatever you put into their tank. Remember that these fish can be territorial and aggressive, and therefore, ensuring that they have plenty of space and an aquarium that mimics their natural environment is quite important. talk to a vet online for advice >. So, lets take a look! For a single Oscar Fish, you will need a 55 gallon tank. So they will not bother each other and can live peacefully in the same tank. Oscar fish like their water to be fairly soft to moderately soft, with a KH level between 5 and 20. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); AFC was designed and made with fish keepers like you and me in mind. The waters pH should be kept fairly neutral, with a pH level of between 6 and 8 being acceptable, although a perfectly neutral level of 7 is the ideal. Besides, Black Banded Leporinus is a very active algae eater fish so it will help to keep algae in control in your aquarium. Oscars do like to explore their tanks and they are used to living in natural environments with a fair amount of debris present on the waterbed. The water temperature for an Oscar tank should be between 74 and 81 degrees Fahrenheit. Are Oscar Fish Good Pets? The ideal temperature for Silver Arowana is between 75 to 80 Fahrenheit. The perfect situation for an Oscar fish is going to be a 125-gallon tank. Silver Dollars are medium size fish and you should keep them in at least a group of five in your Oscar fish tank. If you are planning to keep more than a pair or some other tank mates, a 125-gallon tank or larger is the ideal tank size. I hope youll find the content on my site helpful. There are more subspecies of the jewel cichlids blue jewel, green jewel, jewelfish and more. Sudden spikes in the ammonia level can cause loss of color and hunger in your Oscar Fish. To keep algae in control and maintain a clean and clear tank, you should introduce algae eater fish in your tank. ATiger Oscargrows up to 18 inches, whereas anAlbino Oscarwill become 14 inches long. This fish can jump out of the tank so you should always keep a lid on your aquarium to prevent it jumping out of the tank. As a result, these fishes will not fit in Oscars mouth and can easily survive in the tank with it. I'm content with the way it is, but I feel it hasn't reached full potential. Jaguar cichlid is carnivorous so their diet consists of meaty food. Therefore, you will need a tank of 125 gallons or more to give adequate space to both the fishes. Occasionally, you should also feed them frozen or dried bloodworms, brine shrimp, daphnia, blackworms, etc. Like Oscars, they belong to the Cichlid species of fishes and can be even more hostile than them, especially during the spawning season. Ardiej; Apr 22, 2022; Replies 7 Views 348. 15 Best Oscar Fish Tank Mates Full List of Compatible Fish. So you can easily keep both the fish in the same tank. Also, you should regularly feed them frozen or dried bloodworms, brine shrimp, daphnia, etc. So you can easily keep them together in the same tank. they produce a lot of waste. You can see why it is so popular with tank keepers, but there are some considerations for you if you want to keep them with the Oscar fish dont keep them in the tank if they are mating or have just one fish of the species in the tank. You should try to match this diet in your aquarium as well. Also, there is an overlap between the ideal water parameters range for Jaguar cichlids and Oscar Fish so you can keep them together in the same tank. This fish is very popular because it comes in many different colors and sizes. The ideal water temperatures are 75F to 82F. A bigger tank is always better. They are very attractive fish and they can grow to up to 7 inches in size. Remember, Oscars are fascinating and lively creatures as long as you are patient and attentive. Adrena; Oct 3, 2021; Oscar Cichlid Forum; Replies 7 Views . These fish are very peaceful fish, and they tend to mind their own business in the tank. It is one of the most popular fish in the aquarium hobby. But they only turn aggressive if they are running low on space or if they are threatened; also, when there are smaller fish in the tank that they can prey on. Home Freshwater Cichlids Oscars Fish 7 Best Oscar Fish Tank Mates (Compatible And Safe). Besides, Convict cichlids are very active fish and they usually spend most of their time in their territory inside caves or plants, etc so they will not bother you Oscar Fish. Convict cichlids are one of the best fish you can keep as a tank mates in your Oscar Fish tank. Black Banded Leporinus is herbivorous so its diet consists of plant-based foods. With Oscar fish, however, they should get along just fine provided that you give them both enough space to live so that they will not clash and fight with each other. Silver Arowana can get pretty large so there is no way they can fit into the mouth of your Oscar fish. Oscar Fish can live up to 20 years and it can grow up to 12 inches. Some examples of fish that meet these requirements include: For 2 Oscar fish, you should have a tank that is between 100 125 gallons in size. The green terror cichlid is an omnivore, which means that it is not that hard to take care of. So ideally, you should keep a single Oscar Fish in at least 55 gallon tank. Keep in mind that some of these require some knowledge from your part, and also you should have plenty of knowledge to keep the Oscar fish in the first place. It should also be passive or moderately aggressive fish so that it can hold its own against Oscar. No, keeping Angel fish with Oscars is not a good idea. On this blog, I share a lot of information about the aquarium hobby and various fish species that I like. They stay in their territory (usually behind rocks or other tank ornaments) and can gel with different non-aggressive Cichlids, ScavengerCatfish, and Plecos, besides Oscars. Sorry tank mates and tank size cant be exclusive from one another. They have 8-9 black stripes throughout their body that look similar to zebra. Jack Dempsey is a large fish so there is no way that it can fit into the mouth of your Oscar Fish and will get eaten. It can live for up to 10 years. And to the juvenile Green terror, you should feed 3 times per day in small portions. They are also quite large they grow to up to 6 inches, which is also similar to the Oscar fish. This fish can get as large as 6 inches so it does not fit into the mouth of your Oscar Fish and will not get eaten. Firemouth Cichlid 4. This fish can grow up to 7.9 inches so it will not fit into the mouth of your Oscar Fish and get eaten. Thats all we have for you today! Prior to becoming Editor-in-Chief of It's a Fish Thing, Lindsey studied marine biology at the University of California-Santa Cruz. Well, it is true but they are some species of fish that are compatible with Oscar Fish and this is what we are going to talk in this article. I hope youll find the content on my site helpful. Although they can be somewhat aggressive when they are spawning, they are generally not aggressive towards other fish. The ideal water temperature range for Silver Dollar is between 75 to 82 Fahrenheit. The common Oscar fish has a dark brown body with yellow, gray, or pale green stripes. As an Amazon Associate I earn from qualifying purchases. Besides, maintaining clean and clear water is very important for successfully breeding Oscar Fish. These are large, funny-shaped fish and they aren't going to tolerate being picked on well. If you really want these feisty cichlids, it is best to keep your aquarium an Oscar only tank. You should consider some of these fish species as tank mates for the Oscar fish in your tank. As they are omnivorous, you should regularly feed them vegetables such as boiled peas, blanched spinach, carrots, etc. Primarily, you should feed them Cichlids flakes and pellets. But you can also keep other large, passive to moderately aggressive fish in your Oscar fish tank. Remember to keep the water clean for these fish, as they tend to produce quite a lot of mess. Lindsey Stanton. Jack Dempsey is a very large fish (up to 15 inches) so it will not get eaten by your Oscar Fish. To successfully spawn Oscar fish, the fish should be at least 16 months old. Also, try to avoid having other smaller animals in the tank, like the smaller invertebrates shrimp, snails, and other similar creatures. 12 Benefits of Live Plants in an Aquarium. Black Banded Leporinus can grow pretty large up to 7 inches so it will not fit into the mouth of your Oscar Fish and will not get eaten. Most people have no problems keeping 2 or 3 of them in the same tank, although they may get into little skirmishes every now and again. This is a colossal mistake and negates the chances of either of the fishes thriving. Please leave a comment if you have any question. Pros of keeping with Arowana . The only fish I currently have that will for sure be going in this tank is a Sailfin Pleco who's just shy of 12" currently. Can Blood Parrot Cichlid and Oscar Fish Live Together. Ornate Bichirs can grow up to 24-inches, so remember to keep them in a large tank with a lid since they are active jumpers.Scientific Name:Polypterus ornatipinnisFamily:PolypteridaeOrigin:Captive-BredCare Level:ModerateColor Form:TanSize:2Temperature:77-83 FPH:6.5-7.5Diet:CarnivoreMinimum Tank Size:180 gallonsTemperament:Semi-aggressive. Think the tiger Oscar will get along with these tank mates, or should I not even try it? Oscar fish prefers warmer water. Aequidens goldsaum/silversaum (Green Terror) *** 75 Gallons, Parachromis managuensis (Jaguar cichlid) *** 125 Gallons, Cichlasoma salvini (Salvinis cichlid) *** 75 Gallons, Hypselecara temporalis (Chocolate cichlid) **** 90, Herichthys carpintis/cyanoguttatus (Green texas/Texas cichlid) **** 125, Amphilophus labiatus/citrinellum (Red Devil/Midas) ** 125, Multiple oscars *** 125 Gallons (6ft tank), Giant danios (Devario aequipinnatus) ** 75 Gallons, Raphael catfish (Agamyxis pectinifrons/Platydoras costatus ) *** 75 Gallons, Synodontis eupterus (Featherfin Syno) **** 75 Gallons, how to take care of fish when on vacation, Converting a Freshwater Aquarium to Saltwater. If you keep fish in groups, then the Jack Dempsey fish will not get aggressive. The fast growth rate of Oscar fish can lead new fish keepers to issues. Silver Dollar spend most of their time in the middle part of the aquarium. Jaguar Cichlid 7. So, how many Oscars in a 125-gallon tank can you keep? When they are young, they are not aggressive at all. 13 Types of Oscar Fish For Aquarium (With Images). use these ways to increase the oxygen levels. The jaguar cichlid is not an aggressive fish but rather it is rather a semi-aggressive fish. Therefore, when choosing plants for your Oscar fish tank, you do need to go with plants that are extremely hardy and resistant to being uprooted. In your aquarium, it will feed on algae and help to keep algae in control. In terms of diet, they prefer to eat small insects and larvae, but they are not fussy eaters at all. So if your only goal is to breed Oscar Fish then you should purchase already mated and spawned pair of Oscar Fish. The convict cichlid would make a good choice for a tank mate for the Oscar fish. The jaguar cichlid is a very attractive fish. Besides, you can also feed them frozen food like frozen bloodworms, brine, etc. Oscar Tank Mates - True Aquarium This means that if you intend to keep a single green terror cichlid, then they are suitable for tanks of 35 gallons or more. Primarily, you can feed them vegetarian flakes. An Oscar fish needs 55 gallons of tank space at the least, although closer to 75 gallons is the ideal. For 2 Oscar fish, you should have a tank that is between 100 - 125 gallons in size. 15 Best Arowana Tank Mates - FishLab Silver Dollars are schooling fishes that swim as a group in the open, thus signaling the absence of any predator. The larger the better! The bigger the tank, the larger it will grow. The AquariumFishCity is reader-supported and we hope you love the products we recommend! By So, if you have a tank large enough to keep more than two fishes, Severums will be a fantastic choice. So they will also help to keep your tank clean. They can be kept with lots of other fish, however smaller species of Tetra are the most common tank mates. Scientific Name:Andinoacara rivulatusFamily:ChilidaeOrigin:South AmericaCare Level:ModerateColor Form:Blue, Green, WhiteSize:8Temperature:72-80 FPH:6.5-8.0Diet:OmnivoreMinimum Tank Size:50 gallonsTemperament:Semi-aggressive. Most people would go for plants that can be tied to rocks or driftwood. Then identify the pair and keep it in a separate tank. The only thing you should keep in mind is that you should use at least 75 to 80 gallon tank because Oscar Fish can get very big. This fish can grow up to 6 inches so it will not fit into the mouth of your Oscar Fish and will not get eaten. Can angel fish live with Oscars? Therefore, you will want to add a few basic rocks and pieces of driftwood to the mix, just to make them feel at home. Otherwise, oscar fish have simple tank requirements. Or another way is to get at least 6 to 7 juvenile Oscar Fish put them in a tank and grow them together. Oscar Fish Guide: How Many Can You Have In A 125 Gallon Tank? Oscar Fish can be very aggressive and it will eat anything that can fit into its mouth. So, always look for fish that is larger than 6-inches. An Oscar fish needs between 55 and 75 gallons of tank space to be happy, with each additional Oscar requiring an additional 30 gallons. The black ghost knife fish are mainly nocturnal animals and they are mainly of black color; then the only place where they are not black is on the tail, where they have white spots. Silver Dollars are good tank mates for Oscar Fish that dont belong to cichlids family. If you are planning on getting a larger tank at some point, some tankmates to consider are Silver Dollars, Severums . If you are keeping these two species together, make sure you first observe their aggression. Oscar Fish usually dont get lonely and can live happily on their own. The ideal temperature range for Oscar Fish is between 74 to 81 Fahrenheit. . Im keeping freshwater fish from a few years now. The red-tailed sharks can grow to up to 6 inches.
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