I have 75 gallon tank with "plenty" of hiding spots with 3 juvenile cichlid (Oscar, Gt and JD ) The issue I have is my green terror for the most part is swimming/hiding on top of the tank. Why is that?? And what could I do
The only time I have seen a fish at the top corner of a tank is because he/she lost the dominance fight. That seems to be the closest they can get to fully submitting... that's a big assumption but you probably a very stressed GT on your hands.