Johnius pacificus Hardenberg, 1941
Pacific croaker

Family:  Sciaenidae (Drums or croakers)
Max. size:  14 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; brackish; marine
Distribution:  Western Central Pacific: northern (=Pacific) coasts of New Guinea.
Diagnosis:  Dorsal spines (total): 11-11; Dorsal soft rays (total): 25-29; Anal spines: 2-2; Anal soft rays: 7-7. Eye small, 11 to 16 % of head length; snout bluntly rounded; no barbel on chin; teeth differentiated into large and small in both jaws; gill rakers slender, about half the length of gill filaments at angle of arch, 10 to 13 on lower limb. Second anal spine long, stiff, 45 to 54 % of head length. Scales on head and throat cycloid (smooth). Swim bladder hammer-shaped, with about 12 pairs of arborescent appendages along its sides, the first entering head and sending a palmate branch to the front of the pectoral arch. Sagitta (large earstone) with a tadpole-shaped impression, the head of which has its long axis lying obliquely to that of sagitta and the tail expanded and deepened as a hallow cone connected with the head by a narrow groove.
Biology:  Inhabits estuaries and rivers (Ref. 9772).
IUCN Red List Status: Data deficient (DD); Date assessed: 04 September 2019 Ref. (130435)
Threat to humans:  harmless
Country info:   
 


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