That's a lot of fish! I only found 158. Once I had all of the obvious fin/body matches I could get, and several "close enough" matches, I gave up and went back to Plant Tycoon, which I had abandoned once I had started Fish Tycoon. I never did stumble onto magic fish #4 and #5.

But I knew it was time to give it a rest when I realized that I had lost my focus and didn't have room for one more fish. I had 3 completely full tanks...one tank devoted entirely to just sharks with various fin colors (my favorite is the Fanned Shark), a "X-Mas Beta" (green beta with crimson fins, lol!), and various other mismatched fish that I just couldn't part with no matter how goofy they looked.