MalleMalle, what do you feed that thing!?
Hah, mine barely eats at all. The only time I've seen him eat is when I've dropped a shrimp pellet close enough to his face, or he sees it, then he opens his mouth like a Hoover and sucks it all up. The other fish probably outcompete him for food. I usually drop a couple pellets in the cave he's hiding in, just to give him an edge.