Blue betta (Betta smaragdina)

Scientific name: Betta smaragdina Ladiges, 1972

The Blue betta (Betta smaragdina) is a freshwater fish of the family Osphronemidae. In the aquarium it needs water at 24–27°C (75–81°F). Native range: Asia, Mekong and Chao Phraya basins.

Blue betta care at a glance

Temperature: 24–27°C (75–81°F)

Biology

Anal spines: 4 - 5; Anal soft rays: 22 - 26. Head length 4.0-4.5 times in SL; male with anal fin extending to end of caudal fin; stripes on body faint, adult male reddish brown with an iridescent blue or green spot on each scale; anal and caudal fins blue with red rays; female brown with 2 darker stripes.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Betta smaragdina
Family: Osphronemidae (Gouramies)
Order: Perciformes (Perch-like fish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 7.0
Environment: Freshwater;; pH range: 6.0 - 8.0; dH range: 5 - 19 benthopelagic
Climate: Tropical
Distribution: Asia: Mekong and Chao Phraya basins.
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.)