Looking for an old game

on my 1st computer , i played a game, i really enjoyed. Now i almost remember, and i want to know the games title. I can only remember a bit about the game: it was like an adventure puzzle fish, where you control the fish and must not going into the bad fish, i also remember there was a squid boss and a level that came multiply times, where you are swimming away from a shark. I can't remember anything more about the game, so if you help me, it would be nice