Greenfish Sea Cucumber

Stichopus chloronotus is a fairly large species growing to about 25 cm (10 in) with a firm but pliable body and a squarish cross section. The skin is smooth but there are numerous conical fleshy papillae in longitudinal rows, and these are larger on the lower lateral angles. This sea cucumber is a deep blackish-green in colour, and has yellow or red tips to the papillae.

Stichopus chloronotus is native to the Indo-Pacific. Its range extends from the Red Sea and the East Coast of Africa, through Madagascar, the Seychelles, the Comores and Réunion to Australia, Indonesia, China, Japan, Guam, Fiji, Tonga and Samoa. It lives on reefs, but can also be found on rubble located on the outer reef flats at depths down to about 12 m (39 ft).

Stichopus chloronotus is gathered for human consumption across much of its range. Although not one of the most important species for this purpose, it resembles the much-favoured Japanese sea cucumber Apostichopus japonicus and is increasingly being caught in some areas as supplies of that species dwindle. This species has a widespread distribution and is common in many parts of its range so the IUCN lists it as being of "Least Concern". It is also known to occur in several protected areas, including the Dr. K.K. Mohammed Koya Sea Cucumber Conservation Reserve in Lakshadweep, India.