Leaderboard

Highly possible the crabs are nocturnal, and only come out to eat at night. Try feeding an hour before lights go out. In that case, powdered foods will not get to them in a reliable way. Try dropping the pellets or food into those areas the crabs are hiding. From your description above, it does not seem like you have fed them any high protein foods yet. Try Frozen blood worms. Your Neocaridina shrimp will love them too.