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💧 Freshwater Near Threatened 🌡️ Tropical

Spotback loach

Schistura notostigma Bleeker, 1863
Max Length
6.3 cm
Max Weight
Lifespan
Trophic Level
3
Depth
Climate
Tropical
Resilience
Medium
Vulnerability
33.00/100
Typical Length
Depth Zone

📖 Overview

Prefers to inhabit fast flowing streams with a rock or pebble substrate . Found usually browsing among pebbles in shallow, flowing water. Can ascend steep inclines and also occurs in even the highest mountain streams .

Scientific Name
Schistura notostigma
Authority
Bleeker, 1863
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
NT
Max Length
6.3 cm
Trophic Level
3
Resilience
Medium
Vulnerability
33.00/100
Water Temp
22–24 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 11; Anal soft rays: 8. Schistura notostigma differs from all congeners from peninsular India and Sri Lanka by the combination of the following characters: 6-7 wide, brown bars on the posterior half of the body; width of interspaces equal ½-1 times the width of the bars; black bar on caudal-fin base complete, narrower than the width of the interspaces on the body; emarginate caudal fin; incomplete lateral line ending beneath the dorsal-fin base; adpressed pelvic fin surpassing the anus; 7½ branched rays on dorsal fin; pelvic-fin origin beneath first branched dorsal-fin ray; 4-8 pre-operculo-mandibular pores; and suborbital flap in males absent .: elongated.

🌀 Behaviour

Behavioural data for Spotback loach is currently being reviewed.

🦐 Diet

Diet information for Spotback loach is currently being compiled.

🥚 Reproduction

Reproduction data for Spotback loach is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic; pH range: 6.0 - 8.0; dH range: 5 - 12. Tropical; 22°C - 24°C ; 7°N - 6°N endemic to Sri Lanka.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00724 × L3.03 (TL)
Max TL
6.3cm
Dorsal Rays
11
Anal Rays
8

🌡️ Water Parameters & Tolerance

Temperature Range
22–24°C
pH Range
6–8
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
33.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Bleeker, 1863

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