It is often said that a tiger never loses its stripes, but what about its name? Matt Ford investigates…

Which tiger is this? The aquarium tiger barb appears of questionable identity. © Mike McGeoghegan

Cases in which a fish long thought to be one species turns out to represent something else are not especially unusual within the aquarium hobby. Notable examples include that of the ‘arulius barb’, for many years referred to as Puntius arulius (Jerdon 1849) but now confirmed as Dawkinsia tambraparniei (Silas 1954), and the ‘kuhli loach’, normally identified as Pangio kuhlii (Valenciennes 1846), a species which may never have been traded.
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