Galapagos thread herring (Opisthonema berlangai)

Scientific name: Opisthonema berlangai Berry & Barrett, 1963

Galapagos thread herring (Opisthonema berlangai)

The Galapagos thread herring (Opisthonema berlangai) is a marine fish of the family Clupeidae. Native range: Southeast Pacific, endemic to the Galapagos Islands.

Biology

Dorsal spines (total): 0; Dorsal soft rays (total): 13-21; Anal spines: 0; Anal soft rays: 15 - 17. The filamentous last dorsal fin ray distinguishes this species from members of any other eastern Pacific clupeoid genus. Lower gill rakers 50 to 87 in fishes over 14 cm standard length (intermediate between O. medirastre with 41 to 69 and O. libertate with 63 to 110, but neither of these occur in the Galapagos Islands).

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Opisthonema berlangai
Family
Clupeidae (Herrings, shads and sardines)
Order
Clupeiformes (Herrings)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
26.0
Common length
18.0
Depth range
0–50 m (0–164 ft)
Environment
Marine; pelagic-neritic; depth range 0 - 50 m
Climate
Tropical
Distribution
Southeast Pacific: endemic to the Galapagos Islands.
Conservation status (IUCN)
Vulnerable (VU) (D2)
Threat to humans
Harmless
Uses
Fisheries: subsistence fisheries
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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