You say it eats everything. I feed mine via pipette brine shrimp every 2 days until it swims away full.How can I help him? Is it definitely not the angle of his body?
Mine looked well under nourished when I got her. She's now a plump little girl.
I've had mine 6 months an never seen her feed on any food other than brine I give or pods I put in the tank.