Betta raja

Scientific name: Betta raja Tan & Ng, 2005

Betta raja

Betta raja is a freshwater fish of the family Osphronemidae that grows to about 6.5 cm (2.6 in). It is easy to keep and peaceful, suits community aquariums and needs a tank of at least 20 L (5 US gal), water at 24–30°C (75–86°F) and a pH of 5.5–7.0. Native range: Asia, Sumatra, Indonesia.

Betta raja care at a glance

Care level
Easy
Temperament
Peaceful
Community tank
Good
Adult size
6.5 cm (2.6 in)
Minimum tank
20 L (5 US gal)
Temperature
24–30°C (75–86°F)
pH
5.5–7.0
Hardness
5–19 dGH (89–339 ppm)
Diet
Omnivore. Accepts flakes, frozen foods, live foods and vegetables.

Biology

Dorsal spines (total): 1 - 2; Dorsal soft rays (total): 7-10; Anal spines: 2; Anal soft rays: 23 - 26; Vertebrae: 28 - 30. Pelvic fin very long in mature males (15-23 anal fin rays at pelvic fin end, even exceeding anal-fin base in some specimens); anal fin and lower half of caudal fin with dark margins; anal fin rays 25-28 (mode 26); lateral scales 30-32 (mode 31); head length 33.9-37.4% SL; predorsal length 20.0-24.6% SL; preanal length 46.1-52.4% SL; and body length 62.8-70.7% SL.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Betta raja
Family
Osphronemidae (Gouramies)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
6.4
Environment
Freshwater; benthopelagic
Climate
Tropical
Distribution
Asia: Sumatra, Indonesia.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Aquarium: commercial; bait: usually
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

More gouramis & bettas

See all gouramis & bettas

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.

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