Does the subject want to ask, "Is there a fishing line on the back of the three scales?" Yes Mishima scale is a freshwater fish of CYPRINIDAE, whose scientific name is mirror carp, also known as German mirror carp, three-flowered carp and German carp. It originated in Europe. According to the official website, who asked about the complete collection of fish, fish have fishy lines. Fishing line Fishing line is the sense organ for fish to feel the current. There is a kind of scales on the back of fish called lateral line scales.