Pacific thread herring (Opisthonema libertate)

Scientific name: Opisthonema libertate G?nther, 1867

Pacific thread herring (Opisthonema libertate)

The Pacific thread herring (Opisthonema libertate) is a marine fish of the family Clupeidae.

Biology

Dorsal spines (total): 0; Dorsal soft rays (total): 13-21; Anal spines: 0; Anal soft rays: 12 - 23. The filamentous last dorsal fin ray distinguishes it from members of any other eastern Pacific clupeoid genus. Separated from eastern Pacific Opisthonema species by having 63 to 110 lower gill rakers in fishes over 14 cm standard length.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Opisthonema libertate
Family
Clupeidae (Herrings, shads and sardines)
Order
Clupeiformes (Herrings)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
30.0
Common length
22.0
Environment
Marine; pelagic-neritic, usually 50 - ? m
Climate
Tropical
Distribution
Eastern Pacific: Santa Rosalita, Pacific coast of Baja, California, Mexico southward to Punta Sal and Punta Picos, Peru. (Earlier works probably combined data for Opisthonema bulleri and Opisthonema medirastre). Range is extended northwards to San Pedro, California. Rare on outer coast of Baja California Sur.
Conservation status (IUCN)
Least Concern (LC)
Threat to humans
Harmless
Uses
Fisheries: highly commercial; bait: occasionally
Resilience
High, minimum population doubling time less than 15 months (K=0.5)

Sources

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

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