Teaka

Pectoral fins with Hi. Except for a few varieties like Asagi, Shusui and Aka Hajiro, the pectoral fin should be white. When the Hi spreads to the ends of the pectoral fins it is considered a defect. Small Hi at the base of the pectoral fins is a feature called Motoaka.

(Courtesy of the excellent Book Kokugyo Vol II)