Whats a good starter food for retropinnis? I haven't seen him eat yet, and he's pretty skinny (IMO). I just tried earthworms on him, and he mouthed a piece repeatedly for about 5 minutes, but hasn't eaten it yet. I also have shrimp, tilapia, silversides, frozen krill, and freeze dried krill. Any of those particularly high on the list of foods retro's like?