Common name: Yellow-belly hamlet

Scientific name: Hypoplectrus aberrans Poey, 1868

General information

The Butter Hamlet, Hypoplectrus aberrans, is a species of marine fish belonging to the family Serranidae. This small, colorful fish is known for its striking appearance, with a base color that can range from yellow to green, and often marked with dark vertical bars. The Butter Hamlet is a simultaneous hermaphrodite, meaning individuals possess both male and female reproductive organs at the same time, which is a unique trait among the hamlets.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 28 °C (75 to 82 °F)
Acidity
pH 8.1 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy Prefers live rock for hiding
Diet
Carnivore Enjoys mysis and brine shrimp
Social
Pair Pairs bond strongly
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Groupers
    Serranidae
  6. Genus
    Hamlet
    Hypoplectrus
  7. Species
    Yellow-belly hamlet
    Hypoplectrus aberrans Poey, 1868

Care

Butter Hamlets are relatively hardy and can be a good choice for intermediate to advanced marine aquarists. They require a well-established aquarium with plenty of live rock for hiding and hunting. These fish are carnivorous and thrive on a diet of small meaty foods such as mysis shrimp, brine shrimp, and finely chopped seafood.

Reproduction

Reproduction in Butter Hamlets is quite fascinating as they are simultaneous hermaphrodites. They can pair up and take turns playing male and female roles during spawning. This reproductive strategy can increase the chances of successful fertilization.

Habitat

Butter Hamlets are found in the Western Atlantic, from Florida and the Bahamas to the Gulf of Mexico and the Caribbean Sea. They inhabit coral reefs and rocky substrates, often seen at depths ranging from 3 to 30 meters (10 to 100 feet).