Description:

Dorsal spines: 0; Dorsal rays: 0; Anal spines: 0; Anal rays: 0.  
Moray eel. Dorsal-fin origin anterior to gill opening. Anus at about mid-body. Canine teeth moderately large, in a single row in jaws (smaller specimens with an inner row of 1-3 larger teeth).
Colour. Very variable body colour. Ground colour from pale, greenish, brown yellowish to brownish. Obscure dark-brownish spots form several irregular rows along the body, which becomes diffuse and fades with age. The head is a little reddish when alive. Lower jaw generally paler in adults. Dorsal fin of juveniles has thin whitish margin reduced to tip of tail in adults. 
 

Maturity: Lm unknown. Range unknown. Max Length: 80cm TL. 

Found in shallow reefs, including tide pools (depth 0-20m). Not common. 

This species is not protected or subject to fishery regulations. It is caught in the fish trap fishery and by handline, but is an uncommon to rare component of the catch. 

Bray, D.J. 2018. Gymnothorax pseudothyrsoideus in Fishes of Australia, http://fishesofaustralia.net.au/home/species/3816 (30/07/19).

Chen, H-M. et al (1994). A Review of the Muraenid Eels (Family Muraenidae) from Taiwan with Descriptions of Twelve New Records. Zoological Studies 33(1) 44-64 (1994).

Froese, R. & D. Pauly. Eds. 2019. FishBase. https://www.fishbase.se/summary/5395 (29/07/19).