The inhabitant of Acheilognathus tabira tabira in Lake Biwa

Abstract

Acheilognathus tabira tabira is a species of bitterling (Cyprinidae, Acheilognathinae), and is listed as endangered species by ministry of the environment. In recent years, there is no report of A. t. tabira collection in Lake Biwa. In the present study, five A. t. tabira were collected by eri fish traps in north–part of Lake Biwa in 2008. The population size of A. t. tabira in Lake Biwa may increase at one hand, while invasive fish populations declining by eradicating activities at the other. The need for greater attention to the conservation of A. t. tabira in relation to the population dynamics of invasive fishes was suggested.