2. (noun) longfin eel, Anguilla dieffenbachii - usually grow up to 1.2 metres long weighting 10 kilograms, but exceptionally can be 2 metres long weighing over 50 kilograms. Females are typically twice as long as males. Body uniform in colour from dark brown to grey-brown dorsally and silvery ventrally. Widespread throughout Aotearoa/New Zealand freshwater ways, except above swift rapids or waterfalls.