"Secundo," Conseil went on, "the abdominals, whose pelvic fins hang under the abdomen to the rear of the pectorals but aren't attached to the shoulder bone, an order that's divided into five families and makes up the great majority of freshwater fish.
Másodszor - folytatta Conseil - a hasúszók. A hasúszóknak a has alatt, a melluszonyuk mögött hasuszonyaik vannak, amelyek nem tapadnak a vállcsonthoz.