Koi-fish are very beautiful fish, they come in various colors, patterns, and sizes. This is a watercolor painting done by Bryan Collins. What I really love about this painting is how pretty much everything is in a curvilinear form, including the fish. Curvilinear lines give off a look of gracefulness and it gives the koi-fish a beautiful form. I really love how the waves are tangled and intricate, and also how two different shades of blue are used. The colors in this painting are very pastel-like, and they don't really match up right, but for me it all works very well.