源五郎鮒

Etymology
Compound of.

The derivation is somewhat muddled.


 * According to one theory, the Gengorō portion was the name of a fisherman who fished in Lake Biwa, and every morning, presented the best of his catch of funa to the local lord.
 * In another theory, this term arose from a tale about a Lake Biwa fisherman named Gengorō, who fell in love with a noblewoman and arranged a secret meeting with her by hiding a note inside a gengorōbuna fish that he had caught and presented to her.
 * The first portion is also the word for the Japanese diving beetle, possibly because the fish eats insects as part of its diet, or because of a superficial similarity in shape.

Noun

 * 1)  the Japanese crucian carp or, a type of , an edible freshwater ray-finned fish related to carp and goldfish and endemic to Lake Biwa in Japan