Equatorial longfin herring (Opisthopterus equatorialis)

Scientific name: Opisthopterus equatorialis Hildebrand, 1946

Equatorial longfin herring (Opisthopterus equatorialis)

The Equatorial longfin herring (Opisthopterus equatorialis) is a brackish-water fish of the family Clupeidae. Native range: Eastern Pacific, Costa Rica to Guayaquil Gulf, Peru.

Biology

Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 56 - 62. Belly with 26 to 28 scutes. Lower jaw projecting, mouth pointing obliquely upward; no hypo-maxilla. Dorsal fin origin nearer to caudal fin base than to vertical from pectoral fin base by about 2 eye diameters (or behind midpoint of body by about 3 eye diameters); anal fin long, its origin much nearer to snout tip than to caudal fin base. Scales easily shed.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Opisthopterus equatorialis
Family
Clupeidae (Herrings, shads and sardines)
Order
Clupeiformes (Herrings)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
14.6
Environment
Marine; brackish; pelagic-neritic
Climate
Tropical
Distribution
Eastern Pacific: Costa Rica to Guayaquil Gulf, Peru.
Conservation status (IUCN)
Least Concern (LC)
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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