Scissortail Rasbora Care Guide

Rasbora trilineata · Freshwater Fish

Scissortail Rasbora
AI-generated illustration of Scissortail Rasbora
Temperature
73-82°F
pH
6.0-7.5
Adult size
~3″ (7.5 cm)
Suggested tank
30+ gal
Group size
6+ together
Origin
SE Asia
Family
Danionidae

What Scissortail Rasbora look like

The Scissortail Rasbora (Rasbora trilineata) exhibits a laterally compressed, elongated body that can reach a maximum adult size of approximately 2 to 3 inches (5 to 7.5 cm). This species is characterized by its striking coloration, featuring a silvery body adorned with a distinctive tail pattern; each lobe of the forked caudal fin displays a prominent black band tipped with white, resembling a pair of scissors. Sexual dimorphism is subtle, with males typically exhibiting slightly more vibrant coloration and a more pronounced tail fin than females. Defensive adaptations include a streamlined body shape that allows for rapid bursts of speed to evade predators. Additionally, the species possesses a lateral line system that aids in detecting water movements, enhancing its ability to navigate and avoid threats in its aquatic environment.

Behavior & temperament

The Scissortail Rasbora is a social fish that thrives in groups, exhibiting a strong tendency to form schools in the wild, which provides safety in numbers against potential predators. It primarily occupies the mid to upper water column, displaying a pelagic lifestyle. Breeding behavior is characterized by egg scattering, where females release eggs into the water column, allowing for external fertilization. This species is generally peaceful and exhibits low aggression levels, making it an ideal candidate for community aquariums. However, it may display territorial behaviors during breeding periods, particularly among males.

Diet & feeding

In its natural habitat, the Scissortail Rasbora is an omnivore, feeding on a varied diet that includes small invertebrates, zooplankton, and plant matter. In captivity, it requires a balanced diet consisting of high-quality flake food, supplemented with live or frozen foods such as daphnia and brine shrimp to ensure optimal health and coloration.

Behind the name

Rasbora (from the Malay word 'rasborah', meaning 'to cut'); trilineata (from Latin, meaning 'three lines', referring to the distinct markings on the fish).

Plan your tank

Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.

Keeping Scissortail Rasbora?

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