The Atlantic batfish (''Dibranchus atlanticus'') 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 . 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. 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.

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 , but it is most common between . It is a

bathypelagic The bathypelagic zone or bathyal zone (from Greek βαθύς (bathýs), deep) is the part of the open ocean that extends from a depth of below the ocean surface. It lies between the mesopelagic above, and the abyssopelagic below. The bathypelagic ...

species found on the seabed on muddy and sandy sediments.

Biology

This fish may be

bioluminescent Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some Fungus, fungi, microorganisms including ...

, 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. It lures prey to the vicinity of its mouth; its diet consists of small invertebrates such as

polychaete worms Polychaeta () is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes (). Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are m ...

, amphipods, clams,

starfish Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish ...

, brittle stars and sea spiders.

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".

References

{{Taxonbar, from=Q1910542 Atlantic batfish Fish of the Atlantic Ocean Atlantic batfish Taxa named by Wilhelm Peters