Dusky betta (Betta fusca)

Scientific name: Betta fusca Regan, 1910

The Dusky betta (Betta fusca) is a freshwater fish of the family Osphronemidae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: Asia, Sumatra, Indonesia.

Dusky betta care at a glance

Temperature: 22–26°C (72–79°F)

Biology

Dorsal spines (total): 0 - 2; Dorsal soft rays (total): 7-8; Anal spines: 0 - 1; Anal soft rays: 23 - 25; Vertebrae: 29 - 30. Head length 33.2-33.8% SL; anal fin rays 24-25; lateral scales 29; body depth 30.9-31.7% SL; predorsal length 68.5-70.2% SL; preanal length 49.0-50.3% SL; and body length 70.4-70.8% SL.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Betta fusca
Family: Osphronemidae (Gouramies)
Order: Perciformes (Perch-like fish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 8.2
Environment: Freshwater;; pH range: 5.5 - 7.0; dH range: ? - 12 benthopelagic
Climate: Tropical
Distribution: Asia: Sumatra, Indonesia.
Conservation status (IUCN): Not Evaluated
Threat to humans: Harmless
Uses: Aquarium: commercial
Resilience: High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)