How big should an Oscar Fish tank be?
An adult Oscar requires an absolute minimum tank size of 55 UK gallons. Two Oscars will require a minimum of 125 UK gallons. You may well read information that contradicts what we say. Some websites suggest that 2 Oscars can be kept in a 75 gallon tank, or even 4 Oscars in a 120 gallon tank. Whereas it may be possible with increased tank maintenance to keep numerous Oscars in tanks of these sizes, we would recommend you stick to what we suggest. Some Oscars can get extremely big and you will have a very hard job maintaining good water quality if you attempt to pack lots of Oscars into an undersized aquarium. How to set up an Oscar Fish aquarium…
