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Barilius bola = Raiamas bola (Hamilton, 1822)

Trout barb

A slender carp living in fresh waters near the Bay of Bengal

Photo: Sir Francis Day, Public domain, via Wikimedia Commons

The trout barb is a member of the Cyprinidae family known also as the Indian trout and it inhabits freshwaters in the area of the Bay of Bengal. It was taken to two lakes near Pune in 1926 and has since bred successfully there while its flesh has a delicate taste that appeals to fly fishers.

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  • Reaches up to 35 cm in length and 2.3 kg in weight
  • Spawns in June in heavily flooded areas
  • Listed as Least Concern by the IUCN
  • Introduced to lakes near Pune in 1926
  • Has 85 to 95 scales along the lateral line

What it is

This species has a long thin form that is squeezed from the sides and tapers to a pointed nose. Small barbels appear near the upper jaw in young fish but disappear later. Tiny scales cover the body with between 85 and 95 along the side line. The tail is split. The upper body shows dark green black while the sides are silver divided by a gold band. Fins are yellow and green blue marks dot the skin. It can reach 35 cm and weigh 2.3 kg. The overall form supports its predatory habits in the water.

Where it lives

It occurs in fresh waters across India as well as in Bangladesh Nepal and Myanmar. Some were placed into lakes near Pune during 1926 and they reproduced there afterwards. Rivers and streams form its main home along with some ditches and canals. Rocky clear streams are chosen in India. The introduction to the Pune lakes allowed the population to grow in that region over time.

How it lives

The fish has a wide mouth and a body that is streamlined. These traits support an actively predatory lifestyle. It uses them to pursue and catch food in its river and stream homes. The shape helps it move fast in the water currents. This way of life suits the clear waters it prefers in India.

Breeding and life cycle

It reproduces at the start of the monsoon rains in June within areas that are heavily flooded. Fish reach breeding condition after roughly three years. At that time males show stronger colours and their flank skin becomes rough. The process takes place in the flooded areas where conditions are suitable for the eggs.

Trout barb
A drawing made by EveryFish from what this page says. It is a diagram, not a picture of the real fish.

Fish and people

Its meat has a mild pleasant flavour. It provides enjoyable angling for those using fly rods. People value it both for eating and for the challenge it offers in sport fishing. The delicate taste makes it a good choice for meals. This makes the trout barb a dual purpose fish in local waters.

Status and threats

The IUCN rates it as Least Concern yet numbers seem to be falling because of unlawful and harmful fishing practices. Despite the rating the trend is downward. Destructive methods used in fishing are the main cause for the drop in numbers. Protection measures may be needed to help the population recover. This situation calls for attention to fishing methods in the area.

Questions people ask about Trout barb

What does the trout barb look like?

It has a long thin body flattened from the sides with a pointed snout, small scales and a forked tail. The back is dark green black and sides silver with a gold stripe.

Where does it live?

It lives in rivers streams ditches and canals in India and also in Bangladesh Nepal and Myanmar preferring clear rocky streams. It was introduced to lakes near Pune in 1926.

When does it breed?

Breeding happens in June at the beginning of the monsoon in flooded areas. It becomes ready after about three years and males change in appearance then.

Is it good to eat?

The flesh has a delicate flavour and the fish is valued by fly fishermen for sport. Its meat is considered to have a mild pleasant taste.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Trout barb", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryFish rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes, and figures change over time. Nothing here is investment or buying advice. If something is wrong, tell us. Last refreshed 2026-11-15.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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