Max Size: 15cm

Scissortail Rasbora (Rasbora trilineata)

Scissor Tail Rasboras are peaceful, hardy fish making them ideal for the beginner aquarist as well as an excellent member of the larger, well-furnished community aquarium. These Rasboras place no particular demands on water chemistry; therefore, you can combine them with the most popular fish in the hobby, including other Cyprinids, Tetras and Livebearers, as well as Rainbowfish, Anabantoids, Catfish and Loaches.

Scissor Tail Rasboras are a sociable species by nature, so you should keep them in a group of at least six individuals to get the best out of them in the aquarium. These Rasboras exhibit better colours in the presence of their own kind, are far less nervous, and, on the whole, is far more natural-looking.

It is essential to house the Scissor Tail Rasboras in an established aquarium with plenty of open swimming areas. These Rasboras add visual interest and activity to the upper regions of the aquarium. It would be better if you had a tight-fitting lid as these fish are jumpers. It is recommended that you use driftwood or aquarium decorations to provide your Rasboras with areas that they can feel secure. A dark substrate is also recommended as it better shows off the colour of these fish.

Like many other species that come from such spotless natural environments, Scissor Tail Rasboras are intolerant to the buildup of organic wastes and require pristine water at all times to thrive.

The Scissor Tail Rasbora is a transparent, sleek, streamlined fish that has a deeply forked tail resembling an open pair of scissors hence the common name. The distinct bar pattern on the caudal fin accentuates the scissor-like shape. In addition, these fish possess a horizontal black line that runs from behind the gills to the tail and has a silver iridescence that shimmers and sparkles as light reflects off this elegant fish. Finally, some of the wild populations of these fish have yellow pigmentation of varying degrees in their caudal fins.


Scissortail Rasbora
Scissortail Rasbora
Scissortail Rasbora
Quick Facts
Scientific NameRasbora trilineata
Other NamesThree-lined Rasbora, Black Scissor Tail, Scissorfish
OriginsCambodia, Laos, Malaysia, Thailand
Aquarium LevelMiddle - Top
Best kept asGroups 6+
Lifespan4 - 7 years
Water Parameters
Water TypeFreshwater
PH5.0 - 8.0
GH2 - 12
KH5 - 8
73 - 78℉
22.8 - 25.6℃


In the home aquarium, the Scissortail Rasbora will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Sexual Dimorphism

It is somewhat easy to distinguish male from female Scissor Tail Rasboras. Males are typically smaller and more slender than females, and when they are ready to spawn, they will become more intensely coloured. In contrast, females are generally larger and rounder in the belly, particularly when viewed from above.

Other Rasboras of interest

Black Line Rasbora(Rasbora borapetensis)
Blue Line Rasbora(Rasbora sarawakensis)
Chilli Rasbora(Boraras Brigittae)
Clown Rasbora(Rasbora kalochroma)
Dwarf Rasbora(Boraras maculatus)
Emerald Eye Rasbora(Brevibora dorsiocellata)
View all Rasboras
Date Added: 14/07/2021 15:10:41 - Updated: 10/08/2022 18:35:56