Pethia nigrofasciata

"Black Ruby Barb"


Please note that the fish shown in the photo is not the exact fish you will receive and is only a representative of what an adult specimen will look like.

Minimum order: 6
SKU: 11BDMR-BarbBlackRuby Categories: ,

This fish is covered by our Livestock Guarantee Policy


The black ruby barb (Puntis nigrofasciatus) is a tropical cyprinid fish endemic to Sri Lanka, where it occurs in forested streams from the Kelani basin to the Nilwala basin. They are found in streams on hills around 1000 ft in elevation. Black ruby barbs natively live in a tropical climate among cool, shady, quietly flowing forested streams with either gravel or sand substrates. Their diet mainly consists of filamentous algae and detritus. They prefer water with a 6.0–6.5 pH, a water hardness of 5–12 dGH, and a temperature range of 72–79 °F.

The young fish has a yellowish gray body with black vertical stripes. The silver body turns into a dark ruby red color in mature, breeding males. In the female, the basal part of all the vertical fins is black. In the male, the whole dorsal fin is a deep black, the anal fin blackish red, and the pelvic fins are reddish. The fish will grow to a maximum length of 2–3 inches with the female being slightly longer than the male.

An egg-scatterer, the fish spawn more than 100 eggs in shallow water among the plants. The eggs hatch in one to two days and then will be free-swimming after 24 hours.

The black ruby barb is an active swimmer that is best kept in schools of at least six. Plenty of room should be provided for this fish, with plenty of light and a shallow covering of floating plants and ample vegetation (half to two-thirds of the tank area). A layer of humus should be left on the bottom. This species is good for keeping with other barbs and similar fish. In captivity, the fish are omnivorous, with a healthy appetite.

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