I got a rope fish a little over a week ago. He has not showed any interest in eating. I usually feed my carnivore fish frozen blood worms but my rope fish has showed no interest in eating. When I got the rope fish he was injured at the pet store before I brought him home and he lost a fin. He isn' very active during the day but I have seen him active more during the night and in the early morning. I usually feed at night. Should I try different food? Different feeding time?