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💧 Freshwater 🌡️ Tropical

Spotless spiny eel

Macrognathus albus Plamoottil & Abraham, 2014
Max Length
21.2 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
25.00/100
Typical Length
-
Depth Zone
-

📖 Overview

The type locality, Manimala River, is highly sinuous and generally rocky with deep pools at certain locations and sand deposit occurring as sporadic patches or fillings in the pools. It has more or less scanty riparian vegetation. The river has bed materials generally of coarser grade and very low sand content. The width of the river channel ranges from 45-110 m and water depth in the active channel during summer seasons ranges from 0.5 m-3 m. This species occurs together with the following fish species: Anguilla bengalensis, Salmostoma boopis, Danio malabaricus, Barilius bakeri, Gonoproktopterus kurali, Rasbora daniconius, Puntius mahecola, Haludaria fasciatus, Pethia ticto, Dawkinsia filamentosa, Systomus subnasutus, Batasio travancoria, Ompok malabaricus, Clarias dussumieri, Heteropneustes fossilis, Mesonoemacheilus triangularis, Bhavania australis, Xenentodon cancila, Aplocheilus lineatus, Parambassis thomassi, Etroplus maculatus, Etroplus suratensis, Anabas testudineus, Pristolepis malabaricus, Mastacembelus armatus, Macrognathus guentheri, etc. .

Scientific Name
Macrognathus albus
Authority
Plamoottil & Abraham, 2014
Habitat
Freshwater
Climate
Tropical
Max Length
21.2 cm
Trophic Level
3.3
Resilience
High
Vulnerability
25.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 26 - 30; Dorsal soft rays (total): 62 - 65; Anal spines: 3; Anal soft rays: 56 - 62. Macrognathus albus can be distinguished by the following characters: absence of any bands or bars on body; 26- 29 irregular blotches on mid dorsal line from top of operculum to base of caudal; absence of pre-orbital spine; spinous part of dorsal fin originating considerably behind the end of pectoral fin; head longer and deeper, eyes located closely, body width lesser, pre dorsal and pre anal distances greater .

🌀 Behaviour

Behavioural data for Spotless spiny eel is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00437 × L3.02 (TL)
Max TL
21.2cm
Dorsal Spines
28
Dorsal Rays
64
Anal Spines
3
Anal Rays
59

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
25.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Plamoottil & Abraham, 2014

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