Liocranium pleurostigma (Weber, 1913)
Western Blackspot Waspfish
Liocranium pleurostigma
photo by Allen, G.R.

Family:  Tetrarogidae (Wasp fishes)
Max. size:  14 cm TL (male/unsexed)
Environment:  benthopelagic; marine; depth range 12 - 65 m
Distribution:  Indo-West Pacific: Australia to the Philippines, including eastern New Guinea on the basis of collected specimens.
Diagnosis:  Dorsal spines (total): 13-13; Dorsal soft rays (total): 8-8; Anal spines: 2-2; Anal soft rays: 6-6. A species of waspfish with the following characters: gill rakers 14-17 (mode 15); posterior tip of depressed pelvic-fin spine often reaching the anus; relatively short length of upper-jaw, 16.7-18.9% of SL, mean 17.6%; depth of maxilla relatively low (5.1-7.2% of SL, mean 5.9%); longest anal-fin soft ray relatively long (23.8-30.9% of SL, mean 28.8%); relatively small, broad and horizontally oriented first blotch (mean width 12.5% of SL, mean height 10.0% of SL), lateral line running through upper one-third of blotch; extremely small, like a dot, second blotch, mean width 1.2% of SL, mean height 1.5% of SL, located at base of first dorsal-fin soft ray, not on fin membrane; no third blotch (Ref. 77064).
Biology:  Often occurs on flat, relatively open bottoms in 12-65 m, usually observed on turbid inshore coral reefs (Ref 90102).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless
Country info:  Photographed in Coron Bay, Busuanga, Palawan, at about 20 m, by D. Harasti on 20 March 2006 from on the WWII Japanese wreck ‘Olympia-maru’ (ca 5 cm TL). It is the first record of the species from the Northern Hemisphere and suggests that this species is more widely distributed in the central western Pacific Ocean than currently known (Ref. 77064)..


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