carène de fraie

CONT: […] des carènes de fraie, constituées d'une rangée d'écailles allongées, apparaissent juste au-dessus de la ligne latérale, des deux côtés du corps.

CONT: Sexual dimorphism, or differences in shape, is most prominent in capelin during the spawning season. At this time, the males possess a distinct mid-lateral ridge, called the spawning ridge, which is formed by the elongation of the scales and the swelling of the musculature in that vicinity.