👉 Nemocephalus is a genus of fish in the family Cichlidae, which includes the common and rainbow mackerel (also known as "nemo" or "mackerel"). These fish are commonly found in shallow waters around coral reefs. They are characterized by their distinctive flattened heads, which can be white, yellow, or black, depending on the species. Nemocephalus is a popular aquarium fish breed due to its vibrant color and easy care requirements.
