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Marine Mammals Information Database ：Illustrated Guide of Marine Mammals
Rough-toothed dolphin
Scientific Name : Steno bredanensis / Japanese Name : shiwaha-iruka
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 |
| 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. | - |
