Chubby psychedelic mandarinfish chubbing around looking for more food.

Ive had this fish since he was almost a third the size he is now. There’s a male and a female and they regularly swim together. But when he’s hungry, that’s when he wanders off and leaves her, looking for food. He always scavenges between the detritus. It’s a bare bottom frag tank so I was worried that food might be a problem. It clearly isn’t.