anal fin: translationthe median ventral fin or fins behind the anus. Abbreviated as A, or A1 and A2 if there are two. Also called proctopterygium or pr... смотреть
анальный плавник
the distance between the origin and the insertion of the anal fin, i.e. the length of that portion of the anal fin in contact with the body
the depressed length of the anal fin is the distance from the origin to the farthest posterior tip when the fin is flattened down
the distance from the origin to the tip of the longest ray. Sometimes taken as the greatest vertical height from the base
enumeration of the soft anal fin rays. In fishes where the smaller rays in front gradually grade into larger rays, these smaller anterior rays are incl... смотреть