Brochiraja heuresa is a species of cartilaginous fish of the genus Brochiraja of the Arhynchobatidae family of the stingrays . They live in the western part of the Pacific Ocean (between 32 ° S and 36 ° S and between 166 ° E and 170 ° E). They are found at a depth of 1350 m. Their large, flattened pectoral fins form a rounded disk with a triangular snout. The maximum recorded length is 36.4 cm. They are not the target fishing target [1] [2] .
| Brochiraja heuresa |
| Scientific classification |
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| No rank : | Bilateral symmetrical |
| Family: | One-Feathered Rays |
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| International scientific name |
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Brochiraja heuresa Last & Séret , 2012 |
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Content
The species was first scientifically described in 2012 [3] . The species epithet comes from the Latinized word dr.-Greek. εύρηκα - “found”. The holotype is an adult male 35.5 cm long, caught in the Tasman Sea ( ) at a depth of 926–969 m. Paratypes: males 26 , 2–37.9 cm and females 27.3–36.4 cm long, caught there at a depth of 870–1350 m [4] .
These slopes are endemic to the northern Tasman Sea. They are found at a depth of 870–1350 m [2] .
The wide and flat pectoral fins of these rays form a rounded disk with a wide triangular snout. On the ventral side of the disc are 5 gill slits, nostrils and mouth. On the thin tail there are lateral folds. These skates have 2 reduced dorsal fins and a reduced caudal fin [1] . The tail is thin and long, with a rather wide conical base, 1.2-1.3 times the length of the disk, 2.4-2.5 times the length of the head along the ventral side, 4.9-6.0 the length of the snout. The eyes are rather large; their diameter is 2.7-3.4 times the distance from the tip of the snout to the eyes. The anterior margin of the ventral fins is fleshy, spatulate. The dorsal surface of the disc is covered with tiny spiny scales . The middle row of tail small spines is surrounded by small scales. There are no spikes on the dorsal lateral surface of the tail. There is a single reduced preorbital spike. The ventral surface of the disc is bare. The alaric and spines in adult males merge to form a plate covering the front of the pectoral fins. The dorsal surface is bluish pink. The ventral surface is darker than the dorsal, reddish-brown. On the ventral side of the disc there are several pores with a pale border. The pectoral fins are formed by 58–63 rays. Upper dentition 30–42 [3] . The maximum recorded length is 36.4 cm [2] .
These ramps are not the target fishing target. The International Union for Conservation of Nature has not yet evaluated the conservation status of the species.
- ↑ 1 2 Froese, Rainer, and Daniel Pauly, eds. Family Arhynchobatidae - Skates (Neopr.) . FishBase (2014).
- ↑ 1 2 3 Brochiraja heuresa in the FishBase database.
- ↑ 1 2 Last, PR & Séret, B. Two new softnose skates of the genus Brochiraja ( Rajoidei: Arhynchobatidae ) from the deepwater slopes and banks of the Norfolk Ridge (South-West Pacific) // Zootaxa. - 2012. - No. 3155 . - P. 47-64.
- ↑ Brochiraja heuresa (neopr.) . Shark-References. Date of treatment February 15, 2016.