I've had this fish for a few years now, it was sold to me with a couple of bala sharks when it was a baby. Clearly it's not a bala or even a tetra, it seems to be more of a pleco/ in the catfish family. It only seems to eat algae chips and pick through the rocks, he also seems to breathe/filter feed. But he doesn't suction feed like most plecos. He will randomly eat when I feed the other fish in the tank, but mostly he's just chasing them around. Def will eat live bait and small fish as well. He's just shy of a foot in length now too.. I think he's maxed out as he hasn't grown in quite some time now. Any ideas on what this is?