Brilliant Rasbora/Red Tail Rasbora "Rasbora einthovenii"

Care Level



Fore Ground



Reef Compatible


Plant Safe


Max Size

2" - 5"

Minimum Size

10 gallon


Black, Red, White, Yellow



Water Conditions

Acidic to Neutral (5 to 7.5 pH), soft water hardness (3 to 6 dGH), 72 to 82 degrees Fahrenheit

General: The Brilliant Rasbora (Rasbora einthovenii) is a "blackwater", schooling fish species from Southeast Asia (Thailand, Singapore, Malaysia). They have naturally adapted to acidic, stained, and stagnant water conditions. In order to provide optimal living conditions for this relatively hardy fish species, it is best mimic these environmental characteristics.

Preferred Water Chemistry: Acidic to Neutral (5 to 7.5 pH), Soft water hardness (3 to 6 dH)

Aquarium Diet (Carnivorous): Brine shrimp, blackworms, general flake, omnivore pellet

Dimorphism: Once mature, the Brilliant Rasbora (Rasbora einthovenii) male will gain a more noticeable red, and yellow coloration. The female Brilliant Rasbora will retain the silver, and white coloration. Also, the female will take on a more gravid appearance when ready to reproduce.

Compatibility: The Brilliant Rasbora (Rasbora einthovenii) are typically compatible with other Rasbora, Tetra, Danio, Pencilfish, Dwarf Rainbowfish, Dwarf South American Cichlid (Ram, Apistogramma), and Corydoras.