Can you have a Oscar in a ten gallon tank

  • We are currently upgrading MFK. thanks! -neo
If you're not trolling, and honestly think you could keep an Oscar in a 10 gallon tank, then you're either talking about a baby Oscar, or you played animal crossings way too much when you were younger.

I suspect troll, but if not, then the answer to your question is no. For the first 3-4 inches, you can keep an Oscar in a 19 gallon, as long as it has a larger tank to move to once it gets larger (55+ gallons).

I do this rule for my fish, and it seems to work pretty well for small- medium fish. 1-3 inches = 1 gallon per inch. 4-7 inches = 5 gallons per inch, and 8+ inches = 10 gallons per inch.
This is for optimal fish growth/ happiness. You'll notice an Oscar will swim much more in a 120 gallon than in a 55 gallon when it's 12 inches. And a jag will be much happier in a 180 gallon than a 120 gallon at 18 inches.

Of course, an Oscar in a 120 alone would easily accept other fish, like a Jack Dempsey or other fish that get roughly the same size.

If your question was genuine, then I'm glad your on MFK, because here you will eventually learn everything you need to know in order to keep happy and healthy fish.


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Jesus a 75 gallon for a single oscar....
I think thats a bit much.
Petsmart,petsuppermarket sell oscars quite commonly and not everyone who buys them has a 75 gallon tank...

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"Most" of the people I have seen at petsmart don't care what you have along the lines of a tank or what kind of tank mates the fish your buying will have. Also I would say a good bit of the people who buy the fish don't understand how big some of these fish can get. A small Oscar can grow into a big monster. (Good monster) I would think your right though about a 55 being minimum though seems like it could out grow it eventually though.


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True they are kind of just there to make money and they dont care what setup u have.

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