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🌊 Marine Data Deficient 🌡️ Tropical

Lobejaw ilisha

Ilisha sirishae Seshagiri Rao, 1975
Max Length
23 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
0–50 m
Climate
Tropical
Resilience
High
Vulnerability
20.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Lobejaw ilisha (Ilisha sirishae), first described by Seshagiri Rao, 1975 is a medium-sized fish in the family Pristigasteridae (order Clupeiformes). Adults typically reach 23.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 50 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Data Deficient.

Scientific Name
Ilisha sirishae
Authority
Seshagiri Rao, 1975
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
DD
Max Length
23 cm
Depth Range
0–50 m
Trophic Level
3.4
Resilience
High
Vulnerability
20.00/100
Migration
Anadromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 39 - 43. Body moderately slender, belly with 18 to 21 + 8 or 9, total usually 28 or 29 scutes. Eye large, lower jaw strongly projecting; shaft of maxilla with a distinct lobe or flange between hind tip of pre-maxilla and blade of maxilla. Dorsal fin origin near or before midpoint of body; anal origin a little behind dorsal fin base. Swim bladder without a posterior tube (or tubes).: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Lobejaw ilisha is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; brackish; pelagic-neritic; anadromous ; depth range 0 - 50 m . Tropical; 31°N - 0°N, 46°E - 106°E West Pacific: Persian Gulf to the Bay of Bengal and Andaman coast of Thailand to the Gulf of Thailand (Songkhla Lake).

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🐟 Pelagic
Migration
Anadromous
Trophic Level
3.4±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00871 × L3.04 (TL)
Max TL
23cm
Anal Rays
41

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
20.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Seshagiri Rao, 1975

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