Hello all. I recently picked up a group of 7 keyhole cichlids for my 55 gallon. They're all between 2.5-3.5 inches long. All of them only have the defined circular black spot on their side opposed to the elongated "keyhole" spot they get their name from. Does this imply mine are all juveniles or are they just a batch of keyhole cichlids with no keyhole spots? I'm not sure how to tell if they're mature yet.