Their cells can be red, yellow, black, white, blue, or metallic. Now in order to get a beautiful, reddish-orange pattern like the one on this 1.8 million dollar fish, you need to select for fish ...

The red shading fades into dark fins, and their black eyes are rimmed in orange. Oscars, like most fish, are timid when ... with a brilliant light-blue pattern winding over a dark blue background.