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💧 Freshwater Least Concern 🌡️ Tropical

Ganges river gizzard shad

Gonialosa manmina Hamilton, 1822
Max Length
14.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
12.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Ganges river gizzard shad (Gonialosa manmina), first described by Hamilton, 1822 is a small fish. Adults typically reach 14.90 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Gonialosa manmina
Authority
Hamilton, 1822
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
14.9 cm
Trophic Level
3.1
Resilience
High
Vulnerability
12.00/100
Migration
Amphidromous

🔬 Taxonomy

Genus
Gonialosa
Gonialosa
Species
Ganges river gizzard shad
Gonialosa manmina

🐟 Physical Description

Dorsal spines (total): 0; Anal spines: 0; Anal soft rays: 22 - 28. Body fairly deep, somewhat compressed, belly with 16 to 20 (usually 17 or 18) + 11 to 14 (usually 11 to 13), total 27 to 33 (usually 29 to 31) scutes. Upper jaw slender at tip and distinctly turned down, second supra-maxilla very small. Gill rakers fine and numerous (90 to 180 on lower arch). Pre-dorsal scales paired and overlapping in midline; scales moderate or small.: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Ganges river gizzard shad is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; brackish; pelagic; amphidromous . Tropical; 29°N - 21°N

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish 🐟 Pelagic
Migration
Amphidromous
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00832 × L3.03 (TL)
Max TL
14.9cm
Anal Rays
25

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
12.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Hamilton, 1822

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