Skip to content
Fish Freshwater Care: medium Peaceful

Cuming's Barb

Pethia cumingii
— No votes yet Rate it
Other names: Pethia cumingii, Puntius cumingii, Barbus cumingii
Group: Barbs and cyprinids · Family: Cyprinidae · Origin: South Asia — forest streams of southwestern Sri Lanka

A small Sri Lankan barb with two dark vertical bands on its silver-gold body and red or yellow fins. It needs soft water and a planted, dimly lit tank.

Will it suit my tank?

Last updated October 16, 2026

Temperature
22–27°C
pH
6–7
Hardness
2–10 dGH
Adult size
5 cm
Minimum tank size
60 liters
Social structure
School
Group
at least 6, ideally 10+
Swimming zone
Middle
Diet
Omnivore
Breeding
Egg scatterer

Water parameters

Temperature22–27°C
pH6–7
General hardness (GH)2–10 dGH
Recommended range
Considered shrimp safe Suitable for planted tanks

Overview

October 16, 2026 · Suggest an edit

Cuming's barb is a small barb endemic to Sri Lanka. Its silver-gold body bears two dark vertical bands, one behind the gill cover and the other near the tail. Two natural color forms from different streams are known, one with red fins and one with yellow fins. Because its natural range is narrow, captive-bred fish should be preferred whenever possible.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 60 liters and 60 cm in length for a group of 6–10.
  • 23–26°C; soft, slightly acidic water. Stable parameters are important.
  • Densely planted edges, roots, a dark substrate and dim light with floating plants.
  • A 20–25% weekly water change; gentle flow.

Diet

October 16, 2026 · Suggest an edit

Omnivorous. It accepts small flakes and granules; frozen and live foods (brine shrimp, daphnia, small bloodworms) noticeably improve color and condition. Also provide plant matter with spirulina food.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Peaceful and somewhat shy. Males display to each other by spreading their fins; this is harmless. It behaves more boldly in a large group and a planted setting.

Good companions: cherry barbs, harlequin rasboras, small tetras, corydoras, otocinclus, dwarf gouramis.

Avoid: active, dominant barbs such as the tiger barb, large or aggressive fish.

A short profile for this species

The Cuming's Barb page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Usually compatible

Should not be kept together

Hobbyist notes

0 notes

Things you won't find in books, learned by trial and error. The most helpful ones are on top.

No notes yet. If you have experience with this species, leave the first note.
Change history and contributors
  1. Page created · October 16, 2026