Nehu (Encrasicholina purpurea) fish species and information / pictures of Nehu - Encrasicholina purpurea

Nehu (Encrasicholina purpurea) fish species information

Scientific Name
Encrasicholina purpurea

Common Name
Nehu

Biology
Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 13 - 15. Most specimens without pre-pelvic scutes, but some with 1 to 5 thin needle-like scutes. Maxilla tip blunt, reaching to front border of pre-operculum, but scarcely projecting beyond second supra-maxilla. Isthmus short, preceded by a small fleshy plate on urohyal between branchial membranes. Anal fin short, its origin behind base of last dorsal fin ray.

Classification

Classified By

Fowler, 1900

Class

Ray-finned fishes (Actinopterygii)

Order

Herrings (Clupeiformes)

Family

Anchovies (Engraulidae)

Distribution

Region

Eastern Central Pacific

Distribution

Eastern Central Pacific: endemic to Hawaii, but its use as a baitfish may spread its range.

Range

25°N - 14°N, 165°W - 143°W

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

50 m

Zone

pelagic-neritic

Environment

Marine; brackish; pelagic-neritic; depth range 0 - 50 m (Ref. 189)

Trophic Level

3.1 s.e. 0.30 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

True

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

7.5 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial; bait: usually

Vulnerability

Low vulnerability (10 of 100)

Resilience

High, minimum population doubling time less than 15 months (K=1.7)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated