If you get a PINK FATFISH, WORSHIP IT!!! Keep it for how ever long you possibly can because you can get 2 magic fish from it!

Pink Fatfish + Flagged Bananafish= Crimson Comet

Pink Fatfish + Golden Goldbulb= Canary Fire-Arrow

A Pink Fatfish can be found with the cheapest eggs on the game. Max out enviroment, and buy the Rare eggs. You can/should get Banana fish and Goldbulbs in there. Keep doing it until you get the Flagged Bananafish and a Golden Goldbulb, and you are set with 2 more magical fish!