Just want to ask a question, i read somewhere in the forum that feeding live can raise aggression to a bichir and most likely raise cannibalism to lower jaws when thier young, but do feeding them smelt or silverside the same way as feeding live???
I feed mine live no aggression, nipping for food but nothing serious. Earthworms make them grow fast. But if you do feed smelt you can do it either way. If you put it in their whole they'll deathroll it
It's not exactly aggression that becomes a problem, but more of that the fish when hungry is used to finding something to eat that is moving around. So when you may be out of town or unable to feed, they might become hungry and eat their tank mates. Also, feeders (unless you breed your own) can carry parasites or diseases. I'm not familiar with smelt, but I know when I bought silver sides they would come frozen, that usually kills a good chunk of harmful bacteria/parasites.
I dont feed mine live feeder, usually sinking carnivore pellets or smelt, the smelt is frozen from the market, i cut it to small pieces never put the whole smelt, but 80% i feed them is pellets, sometimes i put raw shrimp without head and skin, ill try tilapia next time.