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💧 Freshwater Near Threatened 🌡️ Tropical

Lanka blue laubuka

Laubuka lankensis Deraniyagala, 1960
Max Length
5.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
14.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Occurs in rivers and streams . The type locality, Kalu Ganga, has a gravel-pebble bed with fast-flowing water strewn with boulders . Sympatric with other cyprinids such as Puntius srilankensis, Puntius martenstyni and Labeo fisheri .

Scientific Name
Laubuka lankensis
Authority
Deraniyagala, 1960
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
NT
Max Length
5.8 cm
Trophic Level
3.1
Resilience
High
Vulnerability
14.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 10 - 11; Anal soft rays: 19 - 23; Vertebrae: 35. This species is distinguished from its congeners by the following set of characters: lateral line complete with 33-36 + 1-2 pored scales; scales on transverse line ½ 6/1/2-2 ½ and on caudal peduncle ½ 4/1/1 ½ scales; body depth 27.2-29.8% SL; pelvic-fin length 20.5-25.2 %SL in adults, and longer in juveniles, but not extending beyond origin of anal fin; tuberculation on lower jaw dense, reaching backwards beyond level of anterior orbit . It is distinguished from its Sri Lankan congeners by having a rounded cleithral spot whose greatest dimension is less than the eye diameter; distinct neuromast fields on the lower jaw; unbranched pelvic-fin ray when adpressed usually reaching beyond the anal-fin origin; usually circumpeduncular scales 12-14 and lateral-line scales 33-36; differs from L. varuna in having the round (vs. vertically elongate) cleithral spot . : fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Lanka blue laubuka is currently being reviewed.

🦐 Diet

Diet information for Lanka blue laubuka is currently being compiled.

🥚 Reproduction

Reproduction data for Lanka blue laubuka is currently being compiled.

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.1±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00977 × L3.04 (TL)
Max TL
5.8cm
Dorsal Rays
11
Anal Rays
21
Vertebrae
35

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
14.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Deraniyagala, 1960

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