Aquarist Atlas · the catfish of the world

Every catfish on one map

7,385 georeferenced records across 133 species, drawn across the whole world — the catfish are a near-global freshwater order. The long-whiskered cats, thorny cats and banjos fill South America; the squeakers (Synodontis), Clarias and electric catfish light up Africa; the bagrids, silurids and shark catfishes trace the rivers of Asia; the wels (Silurus glanis) reaches across Europe; and the bullheads and channel cats spread through North America. Colour the cloud by group, or switch to compare mode and read two species’ ranges against each other.

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About this map. Scroll or pinch to zoom, drag to pan, and click a dot to identify the species. The 7,385 dots are real occurrence records pulled from GBIF, the Global Biodiversity Information Facility — an aggregator of museum specimens, scientific surveys and verified citizen-science sightings — queried for both each fish’s current name and its older genus combination (Siluriformes genera have been reshuffled a great deal, so many species are still indexed under a former genus such as Doras, Silurus, Mystus, Pimelodus or Ictalurus). Treat them as a guide to where a species lives, not exact spots: many records are georeferenced to a locality centroid (a nearby village or river mouth) rather than the precise catch site, some are historical or low-precision, and the occasional point may be a misidentification, an aquaculture record, or a feral occurrence well outside the native range — catfish are among the most-farmed and most-introduced fish, so we keep only points that fall inside the native-range boxes. Many small, recently-described stream catfish have no public records yet — an empty map is honest, not an error. No coordinates are invented.

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