The Blackcap Basslet is commonly known as the Blackcap Gramma. The scientific name of this fish is Gramma Melacara. The Blackcap Basslet features a dazzling purple body with a jet black diagonal cap to give a striking look to your saltwater aquarium. The Gramma Melacara prefers to be kept in aquariums with dim lights. Even though the Blackcap Basslet is likely to be shy especially with noisy and mischievous tank mates, it makes a good choice for a community fish tank. It grows from 2" to 4" inches in size, so their tank size can vary between 30 to 100 gallons. The Blackcap Basslet is a threat for invertebrates that are smaller in size like Isopods, Amphipods and Copepods. The Blackcap Basslet needs a saltwater tank with plenty of rock caves in order to hide itself when stressed or threatened. The Blackcap Basslet is often known as deep water dwellers so it would be better to keep them in an aquarium which has controlled lighting. The Blackcap Basslet is semi-aggressive as it is not compatible with other fishes of same species but quite compatible with the fishes that belong to other species. The Blackcap Basslet can be kept either singly or in true mated pairs. We advise you to give the Blackcap Basslet a diet of meaty foods that can be comprising of mysis shrimp, crustacean flesh, marine fish, flakes, pellet and other quality frozen preparations for its continued good health.