
Source: Wikimedia Commons
Rasbora trilineata
A medium-sized rasbora, silver with black and white bands on both lobes of the tail. The scissor-like twitching of the caudal fin at rest gives it its English name. Hardy and peaceful, it is an easy shoaling fish for a large community tank.
Rasbora trilineata ranges from the Mekong and Chao Phraya basins through the Malay Peninsula, Sumatra and Borneo. FishBase records a maximum of 13cm TL, pH 6.0-8.0, 5-12 dH and 23-25C, and notes that the aquarium trade has spread it around the world. A short blackish line along each side of the anal fin base unites behind that fin and runs to the caudal base along the lower edge of the peduncle, which identifies the species. Seriously Fish gives 15cm SL, 22-25C, 2-12 dGH and a 120 x 45cm base, listing pH as not recorded. Very peaceful and undemanding about chemistry, it mixes with characins, livebearers, rainbowfish, anabantoids, catfishes and loaches. It is one of the easier members of the genus to breed, being an egg-scattering continuous spawner. The IUCN rates it Least Concern and it is not covered by CITES.
Source: Wikipedia (CC BY-SA 4.0)
The Scissortail Rasbora lives 5-7 years.
The Scissortail Rasbora grows to Up to 13cm TL.
The ideal temperature for the Scissortail Rasbora is 22〜25℃.
Origin
Southeast Asia (Mekong and Chao Phraya basins, Malay Peninsula, Sumatra and Borneo)
Lifespan
5-7 years
Sources: FishBase / Seriously Fish
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Rasbora trilineata Steindachner, 1870
Authority databases: FishBase
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
Size
Up to 13cm TL
Temperature
22〜25℃
Dried, frozen and live foods
Seriously Fish suggests a 120 x 45cm base. It swims strongly and grows fairly large, so choose a long tank with plenty of open water, and fit a lid, since it jumps.
Seriously Fish gives 22-25C and 2-12 dGH but lists pH as not recorded, while FishBase records pH 6.0-8.0, 5-12 dH and 23-25C in the wild. It is undemanding and copes with any reasonable chemistry.
Very peaceful and an easy midwater fish for a larger community. Characins, livebearers, rainbowfish, anabantoids, catfishes and loaches all suit it, but at up to 13cm it should not share a tank with the tiniest species.
Unfussy, taking dried, frozen and live foods. Regular live and frozen feeds improve colour and condition. It grows quickly, so avoid overfeeding.
One of the easier members of the genus to breed. It is an egg-scattering continuous spawner with no parental care and will spawn often in good condition. The adults eat the eggs, so use a spawning medium and separate eggs or adults.
Strongly shoaling and unsettled in small numbers; eight to ten or more together also shows off the scissoring of the tail. Hardy and suitable for beginners, but choose the tank with the adult size in mind. The IUCN rates it Least Concern.
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Scissortail Rasbora is 22〜25℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Scissortail Rasbora is 5-7 years. With proper care and nutrition, they can live a long and healthy life.
Scissortail Rasbora typically reaches Up to 13cm TL as an adult. Size may vary depending on care conditions and individual genetics.
Scissortail Rasbora feeds on: Dried, frozen and live foods. Aim for a balanced diet with appropriate feeding frequency.
The price of Scissortail Rasbora varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026