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Entry 43Filed under Breeding

Is Pangasius a Freshwater Fish?

Pangasius usually refers to striped catfish, a freshwater fish native to the Mekong basin. The market name can also apply to related species, so check the scientific name for certainty.
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Yes. The fish most commonly meant by pangasius in seafood and farming contexts is striped catfish (Pangasianodon hypophthalmus), a freshwater species native to the Mekong basin. But “pangasius” is also used as a market name for related fish, so the label alone does not always identify one species.

What fish does “pangasius” mean?

In aquaculture and seafood contexts, pangasius usually refers to striped catfish, Pangasianodon hypophthalmus. It is the main farmed pangasius species described by Seafish, and the World Bank’s 2025 Mekong Delta document identifies it as a freshwater fish native to the Mekong basin.

“Pangasius” can also be a broader market name for fish in the Pangasiidae family. Seafish lists names such as basa, swai, tra, river cobbler and Vietnamese catfish in its account of UK seafood labelling. That naming context is specific to the regulations it describes; labels and naming rules can differ by jurisdiction. When exact identity matters, look for the scientific name rather than relying on a common or market name.

Where does pangasius live naturally?

The natural-range statement applies to P. hypophthalmus: it is native to the Mekong basin, a freshwater river system in Southeast Asia. FAO also lists the species among commercial freshwater fish in Cambodia in its Cambodia fisheries profile.

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The Mekong River Commission’s archived species page describes the fish’s distribution along the river and its seasonal movements. Movement through a river and connected floodplain is not a marine life cycle. The page is historical fisheries material, however, and should not be treated as a current assessment of abundance or conservation status.

Does farmed or imported pangasius become a marine fish?

No. A fish’s natural habitat and the place where it is farmed or sold are different things. Pangasius may be farmed and marketed far from its native range, but that does not make the naturally freshwater P. hypophthalmus a marine species. The word on a seafood label may identify a market category rather than a precise species.

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How to identify it on a label

  • For the commonly farmed species: look for Pangasianodon hypophthalmus or striped catfish.
  • For a broader product name: pangasius, basa, swai, tra, river cobbler and Vietnamese catfish may be market names; their use depends on context and local labelling rules.
  • For habitat precision: confirm the scientific name. The freshwater and Mekong-native description here is specifically established for P. hypophthalmus.

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