Definitions of endemic, native, endangered, and invasive species.

Native species (在来種)
Naturally inhabits Lake Biwa or Shiga and not introduced by man. May also inhabit places outside Shiga.

Endemic species (固有種・亜種)
Native species found only in Lake Biwa or Shiga.

Endangered species (絶滅危惧種)
Those facing a high risk of extinction in the wild.

Invasive species (侵略的外来種)
Introduced by man and harms the native species, environment, and local ecosystem.