Fish are different items either caught through fishing or bought through merchants. They will change your pet into a wide variety of different creatures. All fish come in different sizes: fingerling, small, lunker, and flawless.
“ The Betta is a fish in Fate. When consumed, it will turn your pet into a Nocturne Stalker...Betta
“A Grouper is a type of fish that turns your pet into a Creeping Widow. A fingerling grouper...Grouper