I have a 16 gallon tank and all of my fish have been living harmoniously for 8+ weeks. 5 male fancy guppies, 1 molly, and 2 other fish about the same size as the molly. The tank is newish, I had it for 2 weeks with no fish, then 2 more weeks with some little guppies, then I added my "real" fish and have had them for about 8 weeks (little guppies are gone).
Recently the black Molly has started to chase one particular Guppy. Previously all of the fish were getting along fine, but now for some reason the Molly is being a bully to the poor guppy. He still gets along fine with everyone else. Why?
Recently the black Molly has started to chase one particular Guppy. Previously all of the fish were getting along fine, but now for some reason the Molly is being a bully to the poor guppy. He still gets along fine with everyone else. Why?