hypaxial

hypaxial Any structure morphologically ventral to the chordal axis;

前任何形态结构位于部；

upper postventral margin In the caudal fin, the upper part of the postventral margin of the hypaxial web, from the posterior notch to the subterminal notch.

上后边缘在尾鳍，前网后边缘上半部，从后面到接近端位。