I've been playing for 313 hours and have discovered 6/7 of the magic fish. I'm not bragging -- trust me, there was no logic to it...it was all purely by accident.

One that wasn't by accident is that once I discovered how to breed the "main" fish (The Golden Guppy of Isola, also known as the Canary Fire-Arrow) and found out that it sells for $222 (and you can boost that), I made sure to keep two of those breeding in one of my tanks at all times, as well as the two parent fish that created it in the first place. I just kept popping out Canary Fire-Arrow babies in one tank and selling them for $222 a pop. You quickly get enough money to do just about anything you want to do in the game.

I'm having fun, but I admit to getting a big annoyed that I just can't seem to get that last magic fish. I really don't want to cheat and look at the chart, but it is driving me crazy.