Cyprinids (Cyprinidae)

Manipur Barb

Pethia manipurensis

The fish, known scientifically as Pethia manipurensis, belongs to the Carp family (Cyprinidae) and is called the Manipur Barb. Its only natural habitat is located in the Indian state of Manipur, in Loktak Lake, which is part of Keibul Lamjao National Park.

Tank
from 72 L (19 gal), 80 L (21 gal) recommended
Temperature
18 – 25 °C (64 – 77 °F)
Size in aquarium
6 cm (2.4 in)
Acidity
pH 5.5–7.5
Natural rangeRange on the map
  • Loktak Lake area
  • Manipur area
  • India

Tank conditions

Plan the tank stocking
Temperature
18 – 25 °C (64 – 77 °F)
Water pH
Slightly acidic (5.5) – Neutral (7.5)
Water dH
Soft (4) – Hard (15)
Water salinity
no salt (freshwater)
Size in aquarium
6 cm (2.4 in)
Lifespan
3 years
Temperament
Peaceful (regular)
Toward small fish
not a predator
Required aquarium volume
from 72 L (19 gal), 80 L (21 gal) recommended
Lighting
dimmed
Substrate
any, but dark
Water flow
none or stagnant (no flow)
Swimming level
middle level
Feeding
Any (universal)
Keeping
Group (8–10 individuals)
  • Lifespan. A lifespan to expect under good care, not a measured value: it depends heavily on tank volume, water quality and diet — and for selectively bred forms, on their origin as well.
  • Toward small fish. Based on the Predators category in the catalog or the temperament in the species parameters. “A risk to small fish” means the species is not a predator by habit, yet will swallow any fish that fits in its mouth.
  • Required aquarium volume. The 72 L minimum corresponds to a tank footprint of 80×30 см. The recommended 80 L is for the group size given under keeping mode.

Care and keeping

Description

Adults of this fish reach a length of about 6 cm. Their reddish-orange coloration resembles that of the Odessa Barb, but the Manipur Barb is easily distinguished by a black spot located immediately behind the head in the anterior part of the body. Males usually appear slimmer and have brighter coloration, as well as dark speckles on the dorsal fin compared to females.

Habitat

The species is endemic to Loktak Lake, located in the state of Manipur in northeastern India. In nature, the fish inhabit still or slow-moving waters with abundant aquatic vegetation, which serves as cover. Due to anthropogenic impact, including pollution and eutrophication, the species' natural habitat is threatened, and the wild population itself is classified as endangered.

Behavior and Compatibility

This fish is characterized by a peaceful and friendly disposition, as well as noticeable activity. Thanks to its unpretentiousness, it successfully adapts to various conditions in community tanks, making it compatible with many other species. It is preferable to keep Manipur Barbs in a group of 8–10 individuals, as the fish feel more comfortable in a shoal. If kept alone or in pairs, they may become timid and try to hide.

Care and Maintenance

Most Manipur Barbs offered for sale have been bred in aquarium conditions rather than caught in the wild. For aquarists, this is an advantage, as several generations raised in an artificial environment have made these fish less demanding regarding conditions. In particular, they thrive across a wide range of hydrochemical water parameters. For a group of 8–10 individuals, an aquarium of at least 70–80 liters is recommended. The aquarium's decor can be chosen at your discretion, but it's worth noting that under dim lighting and with dark substrate, the fish's coloration becomes more saturated and vibrant. Natural snags and dense thickets of plants, including floating ones that create additional shading, will be very appropriate for decoration. Aquarium care is standard: weekly partial water changes, cleaning organic waste, and maintaining equipment in working order. In their natural environment, these fish feed on algae, detritus, as well as small insects, worms, and crustaceans. In a home aquarium, they readily accept most dry foods, such as flakes and pellets. The diet can be enriched with live, frozen, or fresh brine shrimp, bloodworms, daphnia, and similar foods.

Diet

In natural conditions, the diet of these fish consists of algae, detritus, small insects, worms, as well as various crustaceans and zooplankton. In a home aquarium, they readily accept common dry foods such as flakes and pellets. To diversify their diet, live, frozen, or fresh brine shrimp, bloodworms, daphnia, and other similar foods can be offered.

Breeding and Reproduction

Similar to many small cyprinid fish, the Manipur Barb does not form a clutch but scatters its eggs over the bottom and does not display parental care towards them. Under suitable conditions, spawning occurs regularly. With dense plant thickets in a community tank, some of the fry have a chance to reach adulthood.

Diseases

The Manipur Barb has a relatively strong immune system provided that water purity is maintained and stress factors are absent. Like other members of the carp family, the species is susceptible to typical aquarium diseases such as ich, fin rot, and bacterial skin infections. Prevention involves maintaining stable water parameters, regular water changes, and quality nutrition. If signs of lethargy, fin damage, or changes in coloration are observed, it is necessary to check the nitrogenous compounds in the aquarium.

How to choose

When purchasing, choose active fish that show interest in food and stay in a shoal. Healthy individuals have bright coloration, clean fins without signs of film or erosion, and no visible body damage. Avoid purchasing fish that appear emaciated, swim erratically, or stay separate from their conspecifics, as this may indicate stress or hidden diseases. It is recommended to ask the seller about the keeping conditions and diet the fish are accustomed to.

Compatibility

There are no pair reviews for this species yet — check tankmates in the matcher.

All tankmates

Plants and this fish

Matching water does not mean the plant will stay intact.

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Manipur Barb get?

An adult reaches 6 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Manipur Barb need?

The recommended volume is 80 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Manipur Barb need?

Temperature 18–25 °C, pH 5.5–7.5, hardness 4–15 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Manipur Barb live?

Around 3 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Manipur Barb aggressive?

Temperament: peaceful (regular). Keep this in mind when choosing tank mates.

How many Manipur Barb should be kept together?

Recommended setup: group (8–10 individuals). Ignoring this is a common cause of stress and disease.

What does Manipur Barb eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Manipur Barb?

The scientific name of the species is Pethia manipurensis, family Cyprinids (Cyprinidae). It also appears in the literature as: Puntius manipurensis.

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Other scientific names and conservation status

Other scientific names
Puntius manipurensis
Categories
Cyprinids
Conservation status
EndangeredEN