Zenarchopterus caudovittatus (Weber, 1907)
Long-jawed river garfish

Family:  Zenarchopteridae (Internally fertilized halfbeaks)
Max. size:  14 cm SL (male/unsexed)
Environment:  pelagic; freshwater; depth range - 0 m
Distribution:  Asia and Oceania: Merauke River in Irian Jaya, Indonesia and Arnhem Land, Australia.
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 12-13; Anal spines: 0-0; Anal soft rays: 13-14; Vertebrae: 46-46. Very long upper jaw, very long pectoral fin, and relatively short lower jaw. Head longer than lower jaw; pectoral fin about as long as head. Sixth anal ray of males widened but not elongated beyond the rest of anal fin rays. None of the male dorsal rays elongated beyond the rest of the dorsal fin.
Biology:  Inhabits estuaries, lowland rivers and tributaries. A shoal-forming species which swims near the surface. Feeds on insects (Ref. 44894).
IUCN Red List Status: Least Concern (LC); Date assessed: 15 February 2019 Ref. (130435)
Threat to humans:  harmless

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