Every name, resolved

A bonytongue fish carries a current scientific binomial under the Catalog of Fishes and, usually, an English common name — “arowana”, “arapaima”, “African butterflyfish”, “clown knife”, “elephantnose”. The order’s taxonomy keeps moving — the arapaima has been split into several species, the Scleropages arowana colour forms are debated, and many African mormyrids were first described under a different genus — so the same fish often travels under more than one name. This index cross-references both layers — the 201 scientific names and 162 common names — and resolves each one to its species page.