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💧 Freshwater Data Deficient 🐠 Aquarium 🌡️ Tropical

Betta Obscura

Betta obscura Tan & Ng, 2005
Max Length
6.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Betta Obscura (Betta obscura), first described by Tan & Ng, 2005 is a small fish in the family Osphronemidae (order Anabantiformes). Adults typically reach 6.90 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Data Deficient.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Osphronemidae kept in the hobby.

Scientific Name
Betta obscura
Authority
Tan & Ng, 2005
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
DD
Max Length
6.9 cm
Trophic Level
3.3
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 0 - 2; Dorsal soft rays (total): 8 - 9; Anal spines: 2 - 3; Anal soft rays: 24 - 27. Opercle with second postorbital stripe. Anal-fin rays 26-29 (mode 28). Subdorsal scales 5 1/2 - 7 (mode 6 1/2). Lateral scales 28-30 (mode 29). Predorsal scales 19-21 (mode 20); postdorsal scales 10-11 (mode 11). Preanal length 46.1-50.7% SL. Head length 30.9-35.4% SL. Length of anal-fin base 51.3-56.4% SL .: fusiform / normal.

🌀 Behaviour

Behavioural data for Betta Obscura is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 🪺 Nest Builder
Spawning Season
spring
Spawn Location
Nest
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical known only from Barito basin in Kalimantan Tengah, Indonesia.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00977 × L2.97 (TL)
Max TL
6.9cm
Dorsal Spines
1
Dorsal Rays
9
Anal Spines
3
Anal Rays
26

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Tan & Ng, 2005

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