Gymnarchus

noun
Gym·nar·chus | \jimˈnärkəs\

Definition of Gymnarchus 

: a monotypic genus (the type of the family Gymnarchidae) that contains a soft-finned African river fish having a sense organ in the tail that functions like radar

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History and Etymology for Gymnarchus

New Latin, from gymn- + Greek archos anus; from the absence of anal fins

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