Yellow labs are some fun and curious creatures. His hiding is not normal. Is it possible that he is being battered by some of the other fish? I guess I should have asked what kind of cichlids you have him with. Although he is a mbuna, yellow labs are some of the more peaceful species.
Hello Mentallylost I just happen on your message and notice the picture of the yellow Cichlid in your message I have one in my tank and it seems to be a loner and does not eat much he is in a fifty five gal tank with 10 other Cichlid it us to be very active now it stay under the rocks in hinding most of the time it dose not appear to be sick what do you think many be wrong?