Hypoplectrus nigricans

Datasheet

General Description

The Black Hamlet (Hypoplectrus nigricans) belongs to the Serranidae family and is a colorful and relatively small predatory fish with a maximum size of 15.0cm. Endemic to the Western Atlantic, specifically from Belize to Panama and throughout the Caribbean, excluding the coast of Venezuela, these fish are known for their striking appearance and relatively peaceful temperament.

Aquarium Suitability

Considered suitable with care for aquariums, Black Hamlets are mostly peaceful but may exhibit aggression towards similar species. They are hardy fish but can be sensitive during transportation. It is recommended to acclimatize them as juveniles, as very small individuals can be delicate. They do well in pairs if introduced simultaneously and require ample hiding spots, such as spaces between live rocks.

Demands, Care, and Hardiness

Black Hamlets are relatively easy to care for, requiring a varied diet of frozen fish, crustaceans, and larger invertebrates, feeding once a day. They are hardy fish but may struggle to adjust to tank life if moved frequently. Maintaining stable water parameters within the ranges of pH 8.1-8.4, specific gravity 1.020-1.025, temperature 22.2-25.6°C, and a carbonate hardness (KH) of 8-12 is crucial for their well-being.

Reef Suitability

Reef keepers should exercise caution when housing Black Hamlets in a reef environment. While they are generally considered reef-safe, their predatory nature may pose a risk to smaller crustaceans within the reef ecosystem.

Aquarium Setup

Creating an ideal aquarium setup for Black Hamlets involves providing ample hiding spaces, such as live rocks and caves. A tank size of at least 300 liters is recommended to accommodate their territorial behavior and swimming needs. Maintaining a well-filtered system is essential due to their excretion of nutrients into the water.

Behaviour

Black Hamlets exhibit mostly peaceful behavior but may display aggression towards similar species or intruders in their territory. They are known to be active swimmers, exploring their environment while seeking out potential prey items.

Feeding and Diet

Feeding Black Hamlets a varied diet consisting of frozen fish, larger crustaceans like shrimp and crabs, other invertebrates, and small crustaceans such as krill, mysis, and artemia is essential for their nutrition and well-being. These fish should be fed once a day to meet their dietary requirements.

Habitat and Distribution

Native to the warm waters of the Western Atlantic, from Belize to Panama and across the Caribbean, Black Hamlets are commonly found in rocky reef environments. Their natural habitat provides them with ample hiding spots and varied prey items, contributing to their survival in the wild.