so my tank is 350 ltrs uk which is 91 us gallons can i only have one fully grown oscar in their if so what size tank do i need for 4 fully grown oscars and some tank mates. they are only 5"max at the mo but im def gunna get bigger tank.
thanks

i have tried four oscars in a 220 gallon tank and had poor results with the attempt. personally i feel that if you want to have that many oscars in one tank you probably should try it with a tank in the 300+ gallon range.