Is it possible for my betta Midnight to have eaten my ansistrus? I found him dead with his fins nibbled and was wondering if Midnight could have killed him as he was very small.
At that size I too doubt the betta could have killed it outright . It may have died from some other cause and the betta and cories nibbled on it afterwards. A Plec , even one that small can easily outswim a betta if nothing else, unless it was weak for some reason.