Gunnellichthys curiosus, the curious wormfish, is a species of wormfish native to the Indian Ocean from the Seychelles and Mauritius to the Hawaiian Islands in the central Pacific Ocean. It is an inhabitant of reefs and can be found at depths of from 9mto60mm (30feetto200feetm). It occurs in areas with substrates that allow it to conceal itself in burrows. It reaches a length of 12cm (05inches) SL. This fish can also be found in the aquarium trade.