There is a list on the Torchlight wikia here: Fish (T2)
Some of the transformations have info pages, but not all:
- Jackalbeast - + 13 poison armour, poisonous bite, and damage cap increase of 5.
- Warbeast - Enhanced damage to 53-85.
- Spider - No stat enhancement but gain the web special ability.
- Mimic - Turn into mimic.
- Molebeast - No stat enhancement but gain stun special ability.
- Swampflyer - ???
Pet transformation fish
Muckfish - Transform into a Jackalbeast for 3 minutes.
Giant Muckfish - Transform into a Jackalbeast permanently.
Pocketfish - Transform into a Mimic for 3 minutes.
Big Pocketfish - Transform into a Mimic for 15 minutes.
Ripsnout - Transform into a Warbeast for 3 minutes.
Tunnel Shark - Transform into a Molebeast for 3 minutes.
Big Tunnel Shark - Transform Into a Molebeast for 15 minutes.
Web Fish - Transform into a Spider for 3 minutes.
Big Web Fish - Transform into a Spider for 15 minutes.
Giant Web Fish - Transform into a Spider permanently.
Giant Flying Fish - Transform into a Swampflyer permanently.
Frenzy Fish - For 3 minutes gain:
33% Faster Movement
+33% Attack Speed
Gold Fish - Not Pet food. Just sell it.
Prismatic Morey - For 3 minutes gain the following:
+25 Critical Hit Chance
+100% to Fire Damage
+100% to Poison Damage
+100% to Ice Damage
+100% to Electric Damage