Tonlesapia tsukawakii Motomura & Mukai, 2006
photo by Motomura, H.

Family:  Callionymidae (Dragonets)
Max. size:  3.36 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Lake Tonle Sap, Cambodia.
Diagnosis:  Dorsal soft rays (total): 8-8; Anal soft rays: 7-7; Vertebrae: 20-20. Distinguished from all other members of the family Callionymidae, except Draculo mirabilis (=Eleutherochir mirabilis) by the absence of first dorsal fin. Differs from D. mirabilis by possessing 8 dorsal-fin rays vs. 12-14 rays, 7 anal-fin rays vs. 12-14, all anal-fin rays, except the last, unbranched vs. all rays branched), and the opercular membrane fused with the body vs. not fused (Ref. 56950).
Biology:  Inhabits lake with mud substrate (Ref. 56950).
IUCN Red List Status: Data deficient (DD); Date assessed: 17 February 2011 Ref. (130435)
Threat to humans:  harmless


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