Common name: Onespot wormfish

General information

The One-spot Wormfish, Gunnellichthys monostigma, is a unique and fascinating species that adds a touch of whimsy to any marine aquarium. This small, elongated fish is known for its distinctive single spot on the dorsal fin, which is where it gets its common name. They are part of the Microdesmidae family, which are commonly referred to as wormfish due to their slender, worm-like appearance.

Care

Caring for the One-spot Wormfish requires an established tank with a sandy substrate that allows them to burrow and hide, which is a natural behavior in the wild. They are peaceful fish that can be kept with other non-aggressive tank mates. A varied diet of meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood will help maintain their health and coloration.

Reproduction

Reproduction in the home aquarium is not commonly reported, but like many marine fish, they are likely to be broadcast spawners, releasing eggs and sperm into the water column where fertilization occurs externally.

Habitat

Gunnellichthys monostigma is found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit lagoons and outer reef slopes, often found in sandy areas near reefs where they can easily burrow. Hobbyists should aim to replicate this environment to some extent to provide the best care for these fish.