The Golden Guppy's benefit as a Magic Fish is the fact that it sells for several times as much money as any other fish. Unlike the other 6 Magic Fish, it does not affect the other fish in the tank.

The Twin-Fin is one of a handful of fins and bodies that cannot be produced by breeding. The only way to get more Twin-Fins (apart from buying and hatching eggs) is to breed two Twin-Fin fishies.

I have observed that the tendency is to breed the same fish over and over, which can result in missing a lot of species! The only way I know of to avoid that is to adopt some sort of systematic breeding approach. If you don't want to resort to tracking your breeding on a spreadsheet or...gasp....on paper, you can use a simple approach that usually produces fishies that you've never seen before:

Make sure that you have level 3 of Fish Environment before you do this, since it will produce fish that can't survive in level 1 or level 2 Fish Environment. Start with a tank that has 20 fishies of various sorts, and have another empty tank. Pick one fish to be your "breeder" fishie and breed it with every other fish in the tank. Make sure to divide the pregnant fish evenly between the two tanks, so that you don't "lose" the babies. Once the offspring are born, sell all of the adults except your "breeder" and repeat the process with the offspring. Continue doing that with each successive generation until you start getting repeats, and then choose a different breeder for the next iteration of the process. You'll be surprised at how many new fishies you can discover that way. No tracking required!

Well, I've been breeding that way for a couple of days now and I have the following over and over again: comets, leaffish, fruitfish and groupers. Oh, and stickfish.
I think I'm going to sell everybody but the magic fish and buy new eggs.
Still need magic fish number 5!

If you put a shark or a spotanus into that mix, you'll start seeing a lot of different fishies!

Of course there are other ways to get the magic fish but this is how I got them.

#1: Canary Spotinus + Twinfin Spotinus = Greenfin Spotinus

#2: Canary Fire-Arrow + Greenfin Beta = Crimson Comet

#3: Orange Fatfish + Orange Fire-Arrow = Orange Snooper

#4: Canary Spotinus + Greenfin Fruitfish = Speckled Leaffish

#5: Spined Goldbulb + Wasp Goldbulb = Oriental Goldbulb

#6: Orange Stickfish + Pink Leaffish = Wasp Grouper

#7: Crimson Goldbulb + Pink Fatfish = Canary Fire-Arrow

This list has errors in it, and won't produce all of the Magic Fish.

I have had 3 twin fin the most recent being the twin fin beta and that was something thst I bred I think the most uglist one that I have come up with has been is a wasp arrow fish and it looks something like a misquito froma a horror movie.. sena_sue@sbcglobal.net

The weird thing is that I the Green fin Spotanus was in the first batch of eggs that was in the batch when I started up..

I think I've always had the Greenfin Spot in either the first batch in a game, or the batch of common eggs that is supplied in a "tutorial" game.

I've noticed that too, that it's fairly easy to get the 1st Magic fish through initial eggs. I have a much harder time getting the Twinfin Spotanus in the Windows version though, whereas it was a quite a bit easier to get in the handheld version. Same fun, just slightly different strategies required.