Onespot Wormfish (Gunnellichthys monostigma)
Fish in the family Congridae. Hard care. Reef Safe with Caution.
Quick facts
Appearance
A small, elongated eel-like fish with a pale tan or yellowish body. The defining characteristic is a single dark spot or ocellus on the shoulder area behind the gill cover. The body is relatively streamlined with a pointed snout, and the dorsal and anal fins run nearly the entire length of the body.
Diet and feeding
Feeds on small crustaceans and benthic invertebrates in the wild. In captivity, offer finely chopped or small frozen foods such as mysis shrimp, copepods, and small amphipods. May require multiple small feedings daily and live foods initially to accept captive conditions.
Difficulty and care for the Onespot Wormfish
The Onespot Wormfish is challenging for most aquarists due to its specialized feeding requirements, tendency toward finickiness, and need for meticulous water quality. Success requires experience with delicate feeders and stable reef conditions.
Common health issues
Marine ich, Fin Rot, Swim Bladder Disorder, Hole-in-the-Head Disease, Columnaris Disease
Origin and habitat
Indo-Pacific region, including the Red Sea, East Africa, and extending to the Pacific Islands. Found on coral reef slopes and rubble areas at depths typically between 20–80 meters.
Log Onespot Wormfish in your reef tank
Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Onespot Wormfish alongside everything else in your reef.
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