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💧 Freshwater Endangered 🌡️ Tropical

Barred danio

Devario pathirana Kottelat & Pethiyagoda, 1990
Max Length
6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
15.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Occurs in still pools to swift flowing streams with pebble or boulder substrates, seldom over sand. Has not been found in silted rivulets flowing into mainstream. More sedentary than D. malabaricus. Forms groups of 3-5 individuals slowly moving near the surface. Probably feeds on insects. Aquarium fish exporters voluntarily refrained from collecting this species until it was better understood and bred commercially. Collected in moderate numbers.

Scientific Name
Devario pathirana
Authority
Kottelat & Pethiyagoda, 1990
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
EN
Max Length
6 cm
Trophic Level
3.2
Resilience
High
Vulnerability
15.00/100
Migration
Non-migratory
Water Temp
22–25 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 14 - 15; Anal soft rays: 16 - 18. Devario pathirana differs from all its congeners by the combination of the following characters: body consisting of 8-9 dark, irregular bars between pectoral-fin origin and caudal-peduncle origin; absence of P+1 and P-1 stripes; body depth 30-33 %SL; snout length less than eye diameter; 14-15 predorsal scales; dorsal fin with 11½-12½ branched rays; anal fin with 14½ branched rays; a blunt, knob-like process on 1st infraorbital; presence of danionin notch; origin of dorsal fin to hypural distance when carried forward reaching middle of eye; pectoral fin, when adpressed, just reaching origin of pelvic fin . : fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Barred danio 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; non-migratory. Tropical; 22°C - 25°C ; 7°N - 6°N

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.2±0.4
Food Items

insects

📐 Morphometrics

Length–Weight Relationship: W = 0.00977 × L3.04 (TL)
Max TL
6cm
Dorsal Rays
15
Anal Rays
17

🌡️ Water Parameters & Tolerance

Temperature Range
22–25°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Kottelat & Pethiyagoda, 1990

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Barred Danio
🌍CES Dánio Cejlonské
🇫🇮Finnish Safiiriseeprakala
🇵🇹Portuguese Danio-marcado
🌍SIN පතිරණ සාලයා

Scientific Synonyms

Scientific Name Author Year Status
Danio pathirana Kottelat & Pethiyagoda 1990 Synonym

🦠 Common Diseases

The following diseases are known to affect Barred danio.

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

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