Common name: spinecheek goby

General information

The Longfin Damsel, scientifically known as Oplopomus oplopomus, is a small and vibrant fish that adds a splash of color and activity to any saltwater aquarium. They are known for their elongated fins and striking blue streaks that run across their body, giving them the alternative names Blue Velvet Damsel and Blue Streak Devil. Despite their beauty, they are also known for their territorial behavior, especially in smaller tanks.

Care

Longfin Damsels are hardy fish that can adapt to a range of water conditions, making them suitable for both beginner and experienced aquarists. They thrive in well-established aquariums with plenty of rockwork and hiding spaces to establish territories. It's important to monitor their aggression, particularly if kept with smaller or more passive fish. A varied diet of meaty foods, algae, and high-quality marine flakes or pellets will keep them healthy and vibrant.

Reproduction

In the wild, Longfin Damsels are known to spawn in groups, with males displaying their elongated fins to attract females. In the aquarium, breeding can occur if a stable pair is established, with the male preparing a nesting site where the female will lay eggs. The male then guards and tends to the eggs until they hatch.

Habitat

Oplopomus oplopomus is native to the Indo-Pacific region, where it is commonly found in shallow reefs and lagoons. They prefer areas with abundant coral and rock formations that provide shelter and feeding opportunities.