Teleostei (teleosts) > Beloniformes
(Needle fishes) > Zenarchopteridae
(Internally fertilized halfbeaks)
Etymology: Zenarchopterus: Particle zen, derived from zao = to give life + Greek, archos = anus + Greek, pteron = fin.
More on author: Weber.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic; depth range 0 - ? m. Tropical; 8°S - 15°S
Asia and Oceania: Merauke River in Irian Jaya, Indonesia and Arnhem Land, Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm SL male/unsexed; (Ref. 44894)
Morphology | Morphometrics
soft rays: 13 - 14;
Vertebrae: 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.
Inhabits estuaries, lowland rivers and tributaries. A shoal-forming species which swims near the surface. Feeds on insects (Ref. 44894).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R., 1991. Field guide to the freshwater fishes of New Guinea. Publication, no. 9. 268 p. Christensen Research Institute, Madang, Papua New Guinea. (Ref. 2847)
IUCN Red List Status (Ref. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.9 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).