Common name: Blackstriped Angelfish

General Information

Blackstriped Angelfish, scientifically known as Genicanthus lamarck, is a striking species of marine angelfish that is popular among aquarium enthusiasts. This species is easily recognizable by its distinctive black stripes running horizontally along its white body, with males often displaying more pronounced coloration. The Blackstriped Angelfish is a member of the Genicanthus genus which, unlike many other angelfish, are known for their peaceful nature and reef-safe behavior.

Blackstriped Angelfish is a favorite in the aquarium trade due to its hardiness and adaptability to captive conditions. It is often recommended for hobbyists looking to add a touch of elegance to their marine tanks without the risk of coral predation. This species is also of interest to those studying sexual dimorphism and sequential hermaphroditism, as it exhibits these fascinating biological traits.

Care

Blackstriped Angelfish is relatively easy to care for, making it suitable for both novice and experienced aquarists. It thrives in well-established aquariums with plenty of live rock for grazing and hiding. A tank of at least 300 liters is recommended to accommodate its active swimming habits and to provide ample space for exploration.

To maintain optimal health, it is important to provide a varied diet that includes marine algae, spirulina, and high-quality angelfish preparations. Regular feeding and stable water conditions are crucial for their well-being.

Diet and Feeding

In the wild, Blackstriped Angelfish primarily feeds on plankton and algae. In captivity, they should be offered a balanced diet that includes a mix of plant-based and protein-rich foods. High-quality flake and pellet foods, along with frozen mysis shrimp and brine shrimp, are excellent choices to ensure they receive all necessary nutrients.

Feeding should occur once or twice daily, with portions adjusted based on the fish's size and activity level. Providing a varied diet helps prevent nutritional deficiencies and keeps them engaged during feeding time.

Behavior and Compatibility

Blackstriped Angelfish is known for its peaceful temperament, making it an ideal candidate for community tanks. It generally coexists well with other non-aggressive fish and is less likely to exhibit territorial behavior than other angelfish species.

This species can be kept singly or in pairs, and it is often observed forming harems in the wild. When keeping multiple individuals, ensure the tank is large enough to accommodate their social dynamics and provide plenty of hiding spots to reduce stress.

Reproduction

Blackstriped Angelfish exhibits sequential hermaphroditism, where individuals can change sex from female to male. This adaptation is particularly useful in haremic social structures, where the dominant female can become male if the need arises. Breeding in captivity is challenging and requires specific conditions to trigger spawning behavior.

Health and Common Issues

Blackstriped Angelfish is generally hardy but can be susceptible to common marine diseases such as ich and marine velvet. Quarantining new additions and maintaining excellent water quality are essential preventive measures. Regular observation and prompt treatment of any signs of illness will help ensure a long and healthy life.

Habitat

Native to the Indo-Pacific region, Blackstriped Angelfish is typically found in outer reef slopes and drop-offs at depths ranging from 10 to 50 meters. They prefer environments with abundant coral growth and clear, warm waters. Replicating these conditions in captivity will help them thrive and display their natural behaviors.