Marine Mammals Information Database :Illustrated Guide of Marine Mammals

Rough-toothed dolphin

Scientific Name : Steno bredanensis / Japanese Name : shiwaha-iruka

Rough-toothed dolphin

Details

Order Cetartiodactyla
Suborder Odontoceti
Family Delphinidae
Genus Steno
Species bredanensis
Subspecies -
Subtype -
CITES Appendix II IUCN RedData Status Least Concern
Baleen plates or tooth-Upper jaw 20-27 Baleen plates or tooth-Lower jaw 20-27
At birth At weaning Adult Adult male Adult female
大きさ - - 8-9ft - -
重さ - - 130-160kg - -
Feature and Habit
There is no distinct boundary between the smooth forehead and the slender and long beak. The dorsal fin is high and falcated with a broad base. The flipper is large and pointed at the tip. The body color is almost dark gray or gray brown and they have pinkish or yellowish white spots laterally. The lower side and the lips are white. They have usually many scratches and round scars at the body. Tooth count ranges 20-27 in each tooth row. They inhabit in offshore waters. They are usually in small pods.
Description
Reference:
Stranding Record(s) in Japan
Map

Marine Mammals Skull Database

A click on the skull thumb nail will bring you to detailed images.


Sex - Reproductive Condition Juvenile
Body length - Locality -
Museum No. - Other No. -

▲Back to top