I have two fish almost exactly like the one in the pic at the top of this forum. The only difference is the length of the tail. Mine both have very long and very strong tail fins. Oh, and their eyes are all black. A local fish "expert" told me that most of my fish are mixed (accidentally crossbred).
The names of the two I'm talking about are Flip and Flop. Flip got her name because she has vertical stripes on one side and spots like the above picture on the other side. Flop is colored just like the above picture.