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One Oscar needs around 20 Gals. Two can survive in about 30 gals. If you wish to rear Oscars you will need at least 5 young fish to avoid deaths from bullying and you will need to house them in at least a 50 Gallon tank.

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βˆ™ 15y ago
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βˆ™ 5mo ago

An Oscar fish should ideally be kept in a tank that is at least 75 gallons in size. Oscars are large and active fish that require ample space to swim and grow comfortably. A larger tank will also help maintain water quality and reduce aggression among tank mates.

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βˆ™ 13y ago

They are medium size now but they will grow so best to get the right size tank for them now so you are not buying 2 or 3, for 2 full grown Oscars its good to give them each about 30 gals each, so for them to do well and live longer go for a 50-60 gal tank

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Q: What size tank should you keep an Oscar fish in?
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How long should baby fish be separated from adult fish?

Baby fish should be separated from adult fish until they are large enough to not be seen as food by the adults. This typically happens when the babies are at least half the size of the adults or when they are able to fend for themselves and compete for food. Monitor their behavior and growth to determine when it is safe to reintroduce them to the main tank.


Can Oscar Carp be tank mates?

Yes, Oscar Cichlids can be kept with other fish in a large enough tank. However, they can be aggressive and territorial, so tank mates should be of similar size and temperament. It's important to provide plenty of hiding spots and space to reduce aggression levels.


Can a Oscar live in a 10 gallon tank its whole life?

An Oscar should not be kept in a 10-gallon tank for its whole life. Oscars can grow up to 12-18 inches in length and require a minimum tank size of 75 gallons to provide adequate space and water quality for their well-being. A larger tank is necessary to accommodate their size and swimming behavior.


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It is recommended to change the filter in your fish tank every 2-4 weeks to maintain water quality and keep your fish healthy. However, monitor your tank regularly and adjust the frequency based on water clarity and the size of your tank.


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Related questions

How big should a Oscar fish tank be?

It depends on what size you have. You can have upto 1inch of fish for each U.S. gallon.


Do Oscar kill other Oscar if they are in the same tank?

Young Oscars should be kept in groups of 5 or more of a similar size to avoid too much bullying pressure being put on one fish. The weakest fish will be killed if there are less.


Does Oscar fish and tinfoil fish live together?

They should be OK together if they are about the same size and you have a large tank (Over 50gals) set up. If you have a pair of Oscars and they decide to breed you will have to remove all other fish.


What species of fish are small in size?

# Chinese Fighter Fish (this fish will kill any fish it comes contact w/. hence the name) # Goldfish # Cleaner (Oscar) Fish # "Ghost" Fish


Why should fishing be limited?

It should be limited so there will always be fish to caught in the future. The problem is that commercial size limits are a lot smaller than the size recreation fisherman are allowed to keep. Commercial fishing also wastes alot of fish in the form of by-catch (fish species they can't keep/don't want) death.


Introducing Oscar fish when i already have 1 but he or she keeps killing them?

Whenever introducing new aggressive fish you should do a large water change and rearrange the tank to eliminate territorial issues. in cases with extreme size disparities the larger fish should be removed and re-introduced after 1-2 days. keeping the tank in darkness can assist this process. The fish will usually fight initially and it is wise to keep an eye on them so you can decide whether one has cannot keep up. lip locking is not necessarily a bad sign, it shows that both fish seek dominance.


What size cage should i keep my hermit crab in?

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What should your fish be in?

If the fish is a coldwater species like a Goldfish it should really be in a pond. If the fish is tropical then it should be in an Aquarium. The size of the aquarium depends on the size and quantity of fish you wish to keep. The basic rule for keeping any fish healthy is "1 inch of fish needs at least 1 gallon of water , a cycled filter running full time and a 50% water change every week."


Are convict fish aggressive to Oscar fish?

Convicts are territorial, especially in breeding pairs. While Oscars can be imposing and destructive, they are more hungry than they are aggressive. If the Oscar is small, Around the size of the convict, it may be bullied to death. And if the Oscar is full-sized, it will most likely eat the convict. In short, don’t do it.πŸ˜…


What size of tank should a battea fish use?

A minimal tank size of 2.5 gallons is recommended for a single Betta fish.


Is the silver dollar fish compatible with a baby tiger Oscar?

very much so, best companion Ive found for my oscar, I have 4 in with my tiger oscar, they stay out of his way if he has a tantrum, and he swims with them at times. I removed them once and put them in a different tank, and my oscar got so depressed I had to move them back. Silver dollars do get to a good size, make sure you have room, they are schooling fish so you need 3 or 4+.


What size stomach should a glow fish have?

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