Harlequin Bass

The Harlequin Bass is a delightful small member of the Serranidae family that stands apart from its massive grouper relatives. At a maximum size of just 4 inches, it is one of the smallest species in the grouper family, making it accessible to aquarists with modestly sized tanks. Its body features bold black tiger-like bars and spots on a pale cream to white background, creating a striking visual pattern.

In the wild, Harlequin Bass are found on coral reefs and rubble zones throughout the Caribbean and Western Atlantic, typically at depths of 3 to 40 meters. Unlike their larger grouper cousins, they are relatively peaceful and can be found in loose aggregations near reef structures. They feed on small crustaceans, worms, and tiny fish.

In captivity, the Harlequin Bass is an excellent choice for aquarists seeking a grouper-type fish for a smaller tank. A 30-gallon aquarium is sufficient for a single specimen. It is generally peaceful toward fish too large to eat and can be kept with caution in reef aquariums, though it may prey on very small ornamental shrimp and tiny invertebrates.