Hi! This is my first time here. I'm Thai, so don't mind my grammar. I'm planning to make a big pond for community predatory fish as an experiment. Firstly, I need predatory fish or any big fish that aren't predators are also fine. Especially those that can live without an air pump, can breathe air by themselves, or can live in low oxygenated water. Do you guys have any recommendations? At this moment, I have an alligator gar, silver arowana, hoplias malabaricus, clown knife fish, giant gourami, aba aba knife fish, bichirs, channa micropeltes. All are still small. Remember, this is an experiment, mistakes are expected to happen, deaths are expected to happen, since they're all predatory fish, some are bigger than the others when they reach their full size, but I'll try my best to prevent any mistake and death of my fish.
