Mastacembelus dayi Boulenger, 1912
photo by Win, T.

Family:  Mastacembelidae (Spiny eels)
Max. size:  30.6 cm (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: known only from three specimens from Irrawaddy river, Myanmar.
Diagnosis:  Dorsal spines (total): 35-35; Dorsal soft rays (total): 77-82; Anal soft rays: 76-79; Vertebrae: 85-86. Body and fins with moderately numerous, relatively large, pale spots with dark edges; spots on fins round; but those on body often vertically elongate; caudal fin rays 25-27 (Ref. 39392).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 23 January 2010 Ref. (130435)
Threat to humans:  harmless


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