Breviraja
| Breviraja | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
.jpg)
|
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Breviraja | ||||||||||||
| Bigelow & Schroeder , 1948 |
Breviraja is a genus from the family of the real rays (Rajidae), which occurs in the western as well as in the northern Atlantic . These rays are quite small and native to deep ocean areas.
features
This genus is characterized by a soft, flexible, slender and diamond-shaped body. The corners on the edge of the trunk are usually square or rounded. The snout is blunt and characteristically soft, its mouth is slightly arched and large in some species, but small in some. Their teeth are single blunt cusps, they have 22 to 36 teeth in the upper and lower jaw. Their tail length is usually shorter than their trunk is wide. Depending on the species, they have thorns on the neck and back, and the stomach usually has no thorns. The back is either uniform or marked by spots. The belly of the animals is usually uniform in color, it can be whitish to dark brown, purple or black, the color can become darker at the edges. The largest specimens of the genus reach a length of about 175 centimeters.
species
There are currently six recognized species within this genus:
- Breviraja claramaculata McEachran & Matheson , 1985
- Breviraja colesi Bigelow & Schroeder , 1948
- Breviraja marklei McEachran & Miyake , 1987
- Breviraja moldi McEachran & Matheson , 1995
- Breviraja nigriventralis McEachran & Matheson , 1985
- Breviraja spinosa Bigelow & Schroeder , 1950
Individual evidence
- ↑ David A. Ebert: DEEP-SEA CARTILAGINOUS FISHES OF THE INDIAN OCEAN Volume 2 Batoids and Chimaeras ; Food and agriculture organization of the united nations, Rome 2014, ISBN 978-92-5-108453-3 ( // PDF ) pp. 40–41.
- ↑ Breviraja on Fishbase.org (English), last accessed on November 14, 2017.
Web links
- Breviraja on Fishbase.org (English)