Actinopteri (ray-finned fishes) > Beloniformes
(Needle fishes) > Zenarchopteridae
(Internally fertilized halfbeaks)
Etymology: Hemirhamphodon: Greek, hemi = half + Greek, rhamphos = bill + greek, odous = teeth (Ref. 45335). More on author: Steindachner.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; brackish; pelagic; depth range 0 - ? m. Tropical
Asia: Sarawak, Malaysia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.0 cm SL male/unsexed; (Ref. 7050)
Morphology | Morphometrics
Belongs to the pogonognathus - group which differs from Hemirhamphodon pogonognathus and the other species of Hemirhamphodon in having 1 two distinct sizes of melanophores in the dorsal fin, large and small. Resembles species of the phaiosoma -group but differs sharply from H. pogonognathus in having a continuous band of pigment extending from the distal part of the fin to its base (Ref. 26761).
Females bear live young (Ref. 58777).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Anderson, W.D. III and B.B. Collette, 1991. Revision of the freshwater viviparous halfbeaks of the genus Hemirhamphodon (Teleostei: Hemiramphidae). Ichthyol. Explor. Freshwat. 2(2):151-176. (Ref. 26761)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00183 - 0.00997), b=3.02 (2.81 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.4 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .