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💧 Freshwater Data Deficient 🌡️ Tropical

Eirmotus Isthmus

Eirmotus isthmus Tan & Kottelat, 2008
Max Length
3.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Occurs in lakes and large permanent water bodies in the floodplain. Caught in water column together with Hyalobagrus flavus (Bagridae), Pseudeutropius brachypopterus, P. moolenburghae (Schilbeidae) and Gymnochanda filamentosa (Ambassidae) .

Scientific Name
Eirmotus isthmus
Authority
Tan & Kottelat, 2008
Habitat
Freshwater
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
DD
Max Length
3.3 cm
Trophic Level
3
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 11; Anal soft rays: 8; Vertebrae: 29 - 31. Differs from other congeners by having subinferior mouth, with a narrow lower jaw whose tip is angulous in ventral view. Can be further differentiated by the presence of small black mark immediately in front of anus with scattered chromatophores near it, visible in lateral view; lacking or very faintly marked bar 1; simple dorsal-fin rays black, black mark not reaching the first branched ray, rest of fin hyaline; posterior margin of last simple dorsal-fin ray with 22-26 serrae; bars narrow, width of bar 5 equal to ½ or less lateral row scale .: short and / or deep.

🌀 Behaviour

Behavioural data for Eirmotus Isthmus is currently being reviewed.

🦐 Diet

Diet information for Eirmotus Isthmus is currently being compiled.

🥚 Reproduction

Reproduction data for Eirmotus Isthmus is currently being compiled.

🌍 Habitat & Distribution

Freshwater; pelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.01479 × L3.02 (TL)
Max TL
3.3cm
Dorsal Rays
11
Anal Rays
8
Vertebrae
30

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Tan & Kottelat, 2008

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