Tenchu: Stealth Assassins is an action-adventure video game developed by Acquire and published by Activision for the PlayStation. Players take control of two ninja warriors, Rikimaru and Ayame, as they sneak through levels, eliminating enemies and completing objectives. The game
From Wikipedia
The tench or doctor fish is a fresh- and brackish-water fish of the order Cypriniformes found throughout Eurasia from Western Europe including Britain and Ireland east into Asia as far as the Ob and Yenisei Rivers. It is also found in Lake Baikal. It normally inhabits slow-moving freshwater habitats, particularly lakes and lowland rivers.