I am new to the aquarium deal, I bought a 55gal tank from a guy and it came with a 6in Bircir and a catfish. He gave me pellets that he feeds them but I don't ever notice him eat. So my question is what are some other food options for him? I bought some of the brine shrimp that come in a little bottle but neither one of them will eat it. The guy I bought it from said he will eat tiny fish that can fit in his mouth so I have thought about that, like buying some tetras or ghost shirmp. Any suggestions would be great

