Dibranchus atlanticus Peters 1876

The Atlantic batfish (Dibranchus atlanticus)^[3] is a species of fish in the family Ogcocephalidae. It is found in deep water in the Atlantic Ocean where it lives on the seabed, feeding on small invertebrates.

Description

D. atlanticus has a disc-shaped, vertically compressed body with a flat ventral surface, and grows to a standard length of 145 mm (6 in). The dorsal fin, which is set far back near the tail, has no spines and five to seven soft rays, and the anal fin has no spines and four soft rays. The pectoral fins are robust and held at right angles to the body; they are limb-like and are used to "walk" over the seabed, and the more slender pelvic fins serve the same purpose.^[4] Under the operculum there is a sturdy multi-pointed spine. The bases of the fins, apart from the dorsal fin, are decorated with tubercles (cone-shaped scales) and the ventral surface of the disc is covered by distinct scales. The dorsal surface of the fish is usually a uniform reddish-grey, but specimens in the eastern Atlantic sometimes have reticulated markings. The ventral surface is paler.^[3][4][5]

Distribution and habitat

D. atlanticus is found in both the western and eastern Atlantic Ocean. Its range extends from the coasts of Canada and the United States, southwards through the Caribbean Sea and Gulf of Mexico to South America, as far south as Rio de Janeiro. In the eastern Atlantic its range includes northwestern Ireland and extends southwards to the Gulf of Guinea and Angola. Its depth range is from 45 to 1,300 m (150 to 4,270 ft), but it is most common between 300 and 823 m (1,000 and 2,700 ft). It is a bathypelagic species found on the seabed on muddy and sandy sediments.^[3]

Biology

This fish may be bioluminescent, as there has been a report that in the laboratory, its skin can emit flashes of light when stimulated with peroxidase, but this effect has not been observed in living specimens.^[6] It lures prey to the vicinity of its mouth;^[1] its diet consists of small invertebrates such as polychaete worms, amphipods, clams, starfish, brittle stars and sea spiders.^[3]

Status

This deep sea fish is of no interest to commercial fisheries but it is often caught in deep water trawl surveys and appears to be common. The International Union for Conservation of Nature has listed it as being a "least-concern species".^[1]

References

Dibranchus atlanticus Dibranchus generoko animalia da. Arrainen barruko Ogcocephalidae familian sailkatzen da.

Banaketa

Erreferentziak

• FishBase.org

Ikus, gainera

• Dibranchus
• Ogcocephalidae

Dibranchus atlanticus is een straalvinnige vissensoort uit de familie van vleermuisvissen (Ogcocephalidae).^[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1876 door Peters.

大西洋長鰭蝠魚（學名：Dibranchus atlanticus），為輻鰭魚綱鮟鱇目棘茄魚亞目棘茄魚科的其中一種，分布於西大西洋，從加拿大至巴西；東大西洋，從幾內亞灣至安哥拉海域，屬深海底棲性魚類，棲息深度45-1300公尺，本魚頭部寬大，全身幾乎為骨板，全身佈滿小瘤，頭頂至背部的瘤呈放射狀，腹鰭細長，體長可達39.4公分，棲息在沙泥底質海域，具有發光器官，肉食性，以多毛類、貝類、海蜘蛛、海星、片腳類等為食。

参考文献

• Froese, Rainer & Daniel Pauly, eds. (2014). Dibranchus atlanticus in FishBase. 2014年2月版本

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