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You might be able to get away with it, but honestly i don't think it's a very good idea. The Oscars are likely to nip the fins of the koi. Oscars are much more aggressive

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Q: Can koi and Oscars be tank mates if the koi is double the Oscars size?
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One of my Oscars seems like he is having a hard time breathing his mouth is opening up really wide and fast and his gills are really flaring up can someone tell me what it could mean?

hi im 13 ive had Oscars and are sensitive to nitrates you should be changing the water regulary and should have an air pump and they should have a big tank and not to many tank mates hi im 13 ive had Oscars and are sensitive to nitrates you should be changing the water regulary and should have an air pump and they should have a big tank and not to many tank mates


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I would advise at least an 8 foot long by 2 foot square tank for that many Oscars.


Can Oscar Carp be tank mates?

Not very effectively since Koi are coldwater fish and Oscars are tropical.http://wiki.answers.com/Q/Can_Oscar_Koi_Carp_be_Tank_Mates&action=edit&section=new


How long do cloud fish live?

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What size tank do i need for 3 Oscars?

I would say a standard 125 or even better a 150 with a large canister filter such as an fx5 would be sufficient for 3 adult Oscars.


What size tank do albino tiger Oscars need?

A well set up and properly filtered 30 gallon tank would be OK.


What are good tank mates for Pacu?

* Oscars * Cichlids (a green terror cichlid would go great with one) * Parrot fish (that is just as equally large as the Pacu) * Red Tinfoil Barb Fish * Plecos (but has to be plecostumus, the large ones) * Red Hook Silver Dollar Fish There are numerous other aggressive, semi-aggressive freshwater fish that Pacus can be good tank mates with. Ask your local pet shops or aquarium. Make sure the Oscars aren't really aggressive.


Tank mates for Large Oscars?

Tasty goldfish. Pretty much anything you put in with an Oscar is going to be it's next meal, so save your money and don't put in anything that you don't want eaten.


Can you have African Knife fish with Oscars in a tank?

I do


How many Oscars can you keep in a tank?

yes they can


What size tank should you keep an Oscar fish in?

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What can you do to keep two 4-inch long Oscars mentally stimulated?

The Oscar fish naturally stay calm when they are in a pair.keeping more than two Oscars in the same fish tank can cause then to get aggressiveso keep two Oscars at the max in one tank.