bettinacharlotta wrote:I had 3 beta fish in my 50 gallon community aquarium. There was 2 females and 1 male. They were fine for about 2 weeks but then they all got a serious case of fungus and died. I think they were stressed out because there was too much current in my tank. I have 3 different filters in the aquarium. If there was less current they could've survived. They were fine with the other fish. As long as you have peaceful fish and not much water currents, you can keep them in your main aquarium.
Bettas as do nearly all anabantoids (those that use atmospheric air), come from very still, nearly stagnant, waters. They WILL NOT last long in a current-filled tank. They don't last long, anyway; Bettas only live two years, and you have no idea how old they are when you buy them.
Picking at other fish; Bettas are like people; every one is different. However, they normally go for fish that are smaller than they. They ignore most benthic fishes, larger schools of small fish, and those that are their size or larger.
Dave
I dream of L-Numbers . . .