Hey folks im not entirely sure if my black molly is sick or im just being stupid. Basically its a black molly, unsure of sex. Im pretty sure it was completely black but now seems to be getting yellow underbody. Tank is 250litres with a mix of mollys, tetras,plecos, shrimp, snails and a few other breeds on fish i cant remember. Behaviour wise it seems happy and is eating and engaging well with tank mates. As i said im not sure its sick but thought id ask anyway. Thanks