Viviparous halfbeak (Zenarchopterus gilli)

Scientific name: Zenarchopterus gilli Smith, 1945

Viviparous halfbeak (Zenarchopterus gilli)

The Viviparous halfbeak (Zenarchopterus gilli) is a freshwater fish of the family Hemiramphidae. Native range: Indo-Pacific, Madagascar, Mozambique, Seychelles Island, Andaman Islands, East Indies, Caroline Islands, Fiji, Guam and northern Australia. Also India.

Biology

Dorsal spines (total): 0; Anal spines: 0; Vertebrae: 38 - 39. Upper jaw about as long as wide. Top of snout uniform brown. Sixth anal ray of males greatly enlarged and elongated, reaching the tip of the caudal fin in adults. Fourth dorsal ray of adult males elongated, thickened distally, curving back to the base of the caudal fin. Vertebrae 38-39. Dorsal rays 10 in females and 11 or 12 in males. Anal rays 10-12 in females and 13 in males.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Zenarchopterus gilli
Family
Hemiramphidae (Halfbeaks)
Order
Beloniformes (Needle fishes)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
20.0
Environment
Marine; freshwater; brackish; reef-associated; amphidromous
Climate
Tropical
Distribution
Indo-Pacific: Madagascar, Mozambique, Seychelles Island, Andaman Islands, East Indies, Caroline Islands, Fiji, Guam and northern Australia. Also India
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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