He is a double Tail (DT) copper. It is said that coppers have a steel blue + metallic background. But if you cross them to irids, you will get more turquoise/green than any other irid. What I love about them is that they show different colors with different light angles.
Copper x turquoise = majority turquoise, steel green (light shiny green), copper, seldom = steel blue (metallic and regular) and royal blue.
Copper x steel blue = all irid colors, copper, metallic green and steel blue
Copper x royal blue = same as x steel blue
NOTE: I notice there have been shift in results to the above crosses due to over crossing this color. Nowadays, for example, you can get dominant copper colored fry when crossing to turquoise.
To ensure copper colored fry, it would be best to breed to another copper. But crossing to any irid colors should give you a number of coppers.
As for the DT trait, it is best to breed to a single tail HM. You should get DT genos (often longer dorsal or uneven caudal lobes). Do not breed to another DT as that may bring out genetic defects that come with the DT trait.
Depending on what you are trying to achieve, adding red (any color containing or belonging to the red line) to it will give you a lot of red coppers (copper body with red fins). Crossing to white opaque should eventually give you platinum (never tried from scratch)