New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🌡️ Tropical

Nehu

Encrasicholina purpurea Fowler, 1900
Max Length
7.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
0–50 m
Climate
Tropical
Resilience
High
Vulnerability
11.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Epipelagic . A schooling species living close inshore and entering bays, inlets, estuaries, canals and even penetrating into fish ponds, thus able to tolerate a wide range of salinities. Feeds mainly on planktonic crustacean larvae. Breeds throughout the year, with a peak in summer, spawning at night (between 2200 and 0200 hours) in bays and estuaries .

Scientific Name
Encrasicholina purpurea
Authority
Fowler, 1900
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
7.5 cm
Depth Range
0–50 m
Trophic Level
3.1
Resilience
High
Vulnerability
11.00/100
Salinity
30–40 ppt

🐟 Physical Description

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.: elongated; Cross section: circular.

🌀 Behaviour

Behavioural data for Nehu is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

Spawn in bays and estuaries in school . Spawning is said to be continuous throughout the season .

🌍 Habitat & Distribution

Marine; brackish; pelagic-neritic; depth range 0 - 50 m . Tropical; 25°N - 14°N, 165°W - 143°W Central Pacific: endemic to Hawaii, but its use as a baitfish may spread its range.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🐟 Pelagic
Trophic Level
3.1±0.3
🐠 Schooling
Food Items

planktonic crustacean larvae

📐 Morphometrics

Length–Weight Relationship: W = 0.00955 × L3.2 (TL)
Max TL
7.5cm
Anal Rays
14

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
11.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Fowler, 1900

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Anchovia purpurea Fowler 1900 Synonym
Anchoviella purpurea Fowler 1900 Synonym
Engraulis purpurea Fowler 1900 Synonym
Stolephorus purpureus Fowler 1900 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 3 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Nehu ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.