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