It really looks like he was covered in tin foil then had pieces stripped off and he looks amazing.  The Fancy Copper Plakat Betta or Fancy Avatar is a very high-grade coloration fish of the plakat body variety. This fish boast an impressive mix of colors developing distinctive metallic, shiny scales as they mature! Previously known as the wild betta the Half Moon Plakat is easily recognized for larger rounder tails that spread 180 degrees. They come in a wide variety of colors and patterns reaching more than 3inches (the Giant Betta)