There are 3 main types of carp;
-Common carp with scales all over the body
-Mirror carp, who has a few scales deposited over the body, however it is not full covered like common carp
-Leather carp, who has even less scales and which are only distributed near the dorsal line and at the wrist of the tail.
Wild carp, who still live in some rivers and lakes in Slovenia, are only the common ones. Their constitution is a bit different from the stocked carp. Wild carp is longer, thinner and more muscular. Dorsal fin is much bigger than in stocked carp.
Stocked carp has much higher body, shorter fins, tail is smaller and body is more round. It can be of all 3 types, mostly common and mirror.
As for the colors, carp adapt the shade according to the environment they live in and some of the color depends on the food they are eating.
They can be of different colors, from bright yellow, grey to almost black. Back is usually darker, grey, but it could also be black, hips are greenish- yellow or dark grey color, again depends of the type.Towards the belly colours brighten, scales become smaller and usually vary from almost white to yellow colour.
They also change color during the seasons, in winter months for instance, skin changes to warmer shades.