bumblebee catfish

Hi here’s my scape. I have a betta, 1 bumblebee catfish, 1 panda Cory, 2 kuhli loach, and 5 ghost shrimp. The betta and the lava rocks have coexisted with no issues for almost two weeks now but yesterday I woke up and noticed a large majority of the bettas anal fin was completely destroyed. I...

In the future im thinking of having a maybe species only tank or such of bumblebee catfish. I heard from a few forums that bumblebee catfish will be more active in a group a 5 or so like kuhli loaches. Is this true if so has anyone had personal experience of this?

Hi in the future I want a tank with bumblebee catfish with some halfbeaks. Do you guys think it will be a safe setup? I know that bumblebee catfish will eat what ever will fit in their mouths and some halfbeaks might be susceptible to that. But halfbeaks are top swimmers while bumblebee catfish...