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EveryFish
Rita buchanani = Rita rita (Hamilton, 1822)

Rita

Large bagrid catfish from South Asian rivers

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

The rita is a substantial bagrid catfish native to southern Asia. It grows up to 150 cm and lives in rivers and estuaries. Fishers target this species for food markets across its range.

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  • Grows up to 150 cm in length
  • Found in six South Asian countries
  • Feeds mainly on molluscs
  • Lives in rivers and estuaries
  • Commercially fished for food

What it is

This fish belongs to the bagrid group of catfish. It ranks among the largest members of its genus. Adults can reach lengths of 150 centimetres. The body shape suits a life near the riverbed. It moves slowly and stays close to the bottom. Water clarity varies from muddy to clear in its home. The species occupies both fresh and brackish zones.

Where it lives

Populations exist across southern Asia. Records confirm presence in Afghanistan, Bangladesh, India, Myanmar, Nepal and Pakistan. The fish inhabits river systems and estuarine areas. It favours calm backwaters and quiet eddies where current slows. Substrate types range from silt-laden mud to clearer sandy bottoms. This adaptability allows it to thrive in diverse aquatic conditions within these countries.

How it lives

Behaviour is sluggish and benthic. It spends most time on or near the substrate. Feeding habits are omnivorous. Molluscs form the primary component of its diet. It also consumes small fishes, crustaceans and insects. Decaying organic material provides additional nutrition. This varied menu helps it survive in changing river environments. Predation pressure likely shapes its bottom-dwelling lifestyle.

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

Fish and people

Fishers harvest this species for commercial sale. It serves as a food fish for local populations. Markets in its range countries value the meat. The Bengali name রিঠা reflects its cultural presence in that region. No specific festivals or religious practices are linked to it in available records. Its size makes it a notable catch for artisanal fisheries.

Questions people ask about Rita

How big does the rita catfish get?

Adults can reach a maximum length of 150 centimetres. This makes it one of the largest species in its genus. Such size contributes to its value in commercial fisheries.

Where does the rita catfish live?

It inhabits rivers and estuaries across southern Asia. Countries include India, Bangladesh, Pakistan, Nepal, Myanmar and Afghanistan. It prefers quiet backwaters and eddies with varying water clarity.

What does the rita catfish eat?

It is an omnivore with a diet focused on molluscs. It also eats small fish, crustaceans, insects and decaying organic matter. This flexible feeding strategy supports survival in diverse habitats.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Rita rita", 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.

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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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