Taxonomic identifications and wild populations are distinct from commercial lines. Aquapedia marks uncertainties and never invents pedigrees, awards or collection localities.
Southeast Asia
Indonesia and Malaysia hold important documented wild Asian arowana populations; Myanmar is the described range of S. inscriptus; Cambodia has a peer-reviewed historical harvest/trade study. Historical mainland records must be checked against current field surveys.
Australia and New Guinea
S. jardinii spans northern Australia and southern New Guinea; S. leichardti is linked to Queensland's Fitzroy drainage.
South America
Silver arowanas are distributed across several Amazonian and adjacent river basins in northern South America. Black arowanas are more geographically restricted to suitable Negro–Orinoco-associated waters.
Africa
African Heterotis populations range across the Nilo-Sudanian region; introductions must be identified by affected watershed. FishBase territorial summaries are a starting point, not proof of survival at every locality.
Publication safeguard
The atlas deliberately omits endangered fish-collection GPS points, ambiguous recent population claims and unverified export legality.
Research sources
Sources support the relevant claims discussed above; unresolved local records remain under review.