Fishing-themed slots can feel as calm as a quiet lake or as lively as open...

https://source-wiki.win/index.php/Why_a_Fishing_Theme_Gives_Designers_So_Many_Ready-Made_Symbols

Fishing-themed slots can feel as calm as a quiet lake or as lively as open water. A tackle box or bobbing float adds familiar detail, while each fisherman—from easygoing to comic—shapes the game’s personality