my dad has a 55 gallon tank with a jd about 3/4 inches long a electric yellow about 3 inches long and and a ahli about 4 inches maybe 3 1/2...well he called me today and he said he put a new branch type thing i there for them to hide in about 2 weeks ago and he said his jd will not leave it not even to eat so he thought he was sick ...so i went and checked it out and the electric yellow guards the branch/cave thing wont let nothing near it not even the pleco and the jd stays inside i finally got him to come out when i threw some brine shrimp in there but he came out the electric yellow went in the jd grabbed the shrimp went back in and the electric yellow went back to guarding..what can be going on? i wouldnt think a jd would mate with a african cichlid...do they?