General information on Bluefin Damselfish
The Bluefin Damselfish as a juvenile features a gray body with a bright yellow dorsal as well as blue fins on its pectoral side. As the fish grows into adulthood, it is black uniformly. In the wild Bluefin Damselfish are typically solitary and are often closely associated with soft corals which it eats. In aquariums, the baby is typically tranquil but can be very aggressive when it grows. It is best to keep it together with large species that are aggressive. It could pose a threat to shrimp and could nibble on soft corals.