They are only about 3 inchs long, I fish started them on guppies for the first week until guppys were all sold out at my lfs(3 shops). I then fed them earthworm that I got from my backyard (Great soil in the backyard, tons of earthworm.. I MEAN TONS!!) I don't think my backyard will ever run out of earthworms. The weather started raining alot so I wasn't able to go dig up some worms, I bought about 60-65 small feeder goldfish for this week. Hopefully they'll eat it all and I can start them back on guppys. They eat about 2-3 goldfish a day per 1 peacock bass.