Besides giant dianos, what other schooling fish could I add to a 90g tank with 1 Oscar? I'd ideally like about 6, so that rules out tin foil barbs and silver dollars due to their size. Suggestions?
my adult (3 yrs old) silver dollars are less than 5 inches. I had 5 in a 100g tank with other large cichlids
My understanding was that silver dollars, like tin foil barbs, reach an adult size of almost 10".
Curious, but where did you read/hear this? Most Silvers I am familiar with are in the max 6 inch range. Some varieties certainly do get bigger than that, but most of the ones sold at lfs do not. If your 90 gallon is only 4 foot long your oscar may well not like his roommates; six foot would be better, but maybe you will luck out and get an oscar pacifist.