600 fish to find in bundle. The set includes two parts of the "100 hidden Cthulhu fish" game series.
https://store.steampowered.com/bundle/44071/600_hidden_Cthulhu_fish/
600 hidden Cthulhu fish - 10 % OFF . A total of 600 fish to find on 6 maps.
Source: Steam Community (opens in a new tab)