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Dactylopteridae

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The flying gurnards are a family, Dactylopteridae, of marine fish notable for their greatly enlarged pectoral fins. As they cannot literally fly or glide in the air (like flying fish), an alternative name preferred by some authors is helmet gurnards.[2] They have been regarded as the only family in the suborder Dactylopteroidei of the Scorpaeniformes but more recent molecular classifications put them in the order Syngnathiformes, in the superfamily Centriscoidea.[3]

They have been observed to "walk" along sandy sea floors while looking for crustaceans, other small invertebrates and small fish by using their pelvic fins. Like the true gurnards (sea robins), to which they may be related, they possess a swim bladder with two lobes and a "drumming muscle" that can beat against the swim bladder to produce sounds. They have heavy, protective scales and the undersides of their huge pectoral fins are brightly coloured, perhaps to startle predators.[2]

Most species are in the Indo-Pacific genus Dactyloptena, but the single member of Dactylopterus is from warmer parts of the Atlantic. The adults live on the sea bottom, but many species have an extended larval stage, which floats freely in the oceans.[2]

Taxonomy

Morphological traits uniting the flying gurnards (Dactylopteridae) and the Syngnathiformes have long been noted. Most authors placed them with the Scorpaeniformes, but DNA sequence data quite consistently support the view that the latter are paraphyletic with the Gasterosteiformes sensu lato. Flying gurnards are particularly close to the Aulostomidae (trumpetfish) and Fistulariidae (cornetfish), and would have to be included with these.[4]

See also

References

  1. ^ Bailly N, ed. (2017). "Dactylopteridae Gill, 1861". FishBase. World Register of Marine Species. Retrieved 14 June 2018.
  2. ^ a b c Eschmeyer, William N. (1998). Paxton, J.R.; Eschmeyer, W.N. (eds.). Encyclopedia of Fishes. San Diego: Academic Press. p. 177. ISBN 0-12-547665-5.
  3. ^ Nelson, JS; Grande, TC & Wilson, MVH (2016). "Classification of fishes from Fishes of the World 5th Edition" (PDF). Retrieved 14 June 2018.
  4. ^ Kawahara, Ryouka; Masaki Miya; Kohji Mabuchi; Sébastien Lavoué; Jun G. Inoue; Takashi P. Satoh; Akira Kawaguchi; Mutsumi Nishida (2008). "Interrelationships of the 11 gasterosteiform families (sticklebacks, pipefishes, and their relatives): A new perspective based on whole mitogenome sequences from 75 higher teleosts". Molecular Phylogenetics and Evolution. 46 (1): 224–236. doi:10.1016/j.ympev.2007.07.009. ISSN 1055-7903. PMID 17709262.

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Dactylopteridae: Brief Summary

provided by wikipedia EN

The flying gurnards are a family, Dactylopteridae, of marine fish notable for their greatly enlarged pectoral fins. As they cannot literally fly or glide in the air (like flying fish), an alternative name preferred by some authors is helmet gurnards. They have been regarded as the only family in the suborder Dactylopteroidei of the Scorpaeniformes but more recent molecular classifications put them in the order Syngnathiformes, in the superfamily Centriscoidea.

They have been observed to "walk" along sandy sea floors while looking for crustaceans, other small invertebrates and small fish by using their pelvic fins. Like the true gurnards (sea robins), to which they may be related, they possess a swim bladder with two lobes and a "drumming muscle" that can beat against the swim bladder to produce sounds. They have heavy, protective scales and the undersides of their huge pectoral fins are brightly coloured, perhaps to startle predators.

Most species are in the Indo-Pacific genus Dactyloptena, but the single member of Dactylopterus is from warmer parts of the Atlantic. The adults live on the sea bottom, but many species have an extended larval stage, which floats freely in the oceans.

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Description

provided by World Register of Marine Species
Marine; benthic. Distribution: tropical Indo-Pacific and Atlantic. Head large and blunt, with the bones forming a helmet; with keels and a long preopercle spine. Scales scute-like. Pectoral fins greatly enlarged, the inner rays free. Two isolated dorsal spines preceeding the two dorsal fins. Thoracic pelvic fins; with 1 spine and 4 soft rays. Lateral line absent. Vertebrae 22. Reaches about 50 cm maximum length. Bears superficial resemblance to triglids; creates sounds by stridulation using the hypomandibular bone. Exhibits a 'walking' movement on the sea floor, accomplished by an alternate movement of the pelvic fins.
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bibliographic citation
MASDEA (1997).
Contributor
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