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Callionymus lyra, Photo: Michael Lahanas

Life-forms

Superregnum: Eukaryota
Supergroup: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Ordo: Syngnathiformes
Subordo: Callionymoidei

Familia: Callionymidae
Genus: Callionymus
Species: Callionymus lyra
Name

Callionymus lyra Linnaeus, 1758
Synonyms

Callionymus dracunculus Linnaeus, 1758
Callionymus elegans Lesueur, 1814
Callionymus sueurii Valenciennes, 1837
Uranoscopus micropterygius Gronow, 1854

Vernacular names
brezhoneg: Skouêg
català: Dragó lira
čeština: Vřeténka pestrá
Deutsch: Gestreifter Leierfisch
English: Common dragonet
euskara: Eiherazain arrunt
suomi: Isomerikokki
français: Dragonnet lyre
italiano: Dragoncello
Nederlands: Pitvis
norsk: Vanlig fløyfisk
polski: Lira
svenska: Randig sjökock
українська: Піскарка велика
Distribution

Eastern Atlantic Ocean

European waters

Conservation status: Least Concern (IUCN)
References

Linnaeus, C. 1758. Systema Naturae per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Tomus I. Editio decima, reformata. Holmiæ: impensis direct. Laurentii Salvii. i–ii, 1–824 pp DOI: 10.5962/bhl.title.542: 249. Reference page.

Links

Callionymus lyra – Taxon details on Animal Diversity Web (ADW).
Callionymus lyra – Taxon details on Global Biodiversity Information Facility (GBIF).
Callionymus lyra - Taxon details on iNaturalist.

Callionymus lyra – Taxon details on Interim Register of Marine and Non-marine Genera (IRMNG).
Callionymus lyra – Taxon details on Integrated Taxonomic Information System (ITIS).
Callionymus lyra – Taxon details on International Union for Conservation of Nature (IUCN) (Least Concern).
Callionymus lyra – Taxon details on National Biodiversity Network (NBN).
Callionymus lyra – Taxon details on National Center for Biotechnology Information (NCBI).
Plazi: 9DA10BA9-746B-C254-87AC-D89527E00C5E
Callionymus lyra – Taxon details on Inventaire National du Patrimoine Naturel (INPN).
Callionymus lyra – Taxon details on Universal Biological Indexer and Organizer (uBio).
Callionymus lyra – Taxon details on World Register of Marine Species (WoRMS).
ZooBank: E4801616-096A-4E8E-A81E-7183D5EFA70E

The common dragonet (Callionymus lyra) is a species of dragonet which is widely distributed in the eastern North Atlantic where it is common near Europe from Norway and Iceland southwards. It is a demersal species that occurs over sand bottoms. It lives to a maximum age of around seven years. It is caught in bycatch by fisheries and is used in the aquarium trade.

Description

The common dragonet has a broad, triangular, flattened head with a long snout and protruding lower jaw, the body is also flattened,[2] although the tail is rounded.[3] The eyes are placed on the top head and the gills are alo on the upper part of the body.[4] The preopercular bone is strongly hooked and has four robust spines, the front facing forwards and the other three face rearwards.[3] The adults are sexually dimorphic and the mature males have elongate rays in their dorsal and caudal fins. The second dorsal fin is yellowish with bright blue longitudinal stripes and they have bright blue marks on the head and body. The females and immature males are brown, paler on the underside, with a series of 6 brown blotches along their flanks. There are three symmetrical brown saddle-like blotches along the back with indistinct darker longitudinal stripes on their second dorsal fin. The females are normally smaller than the males with an average total length of 20 centimetres (7.9 in) long and the larger males grow up to 30 centimetres (12 in). Their colour and patterning mean that common dragonets are well camouflaged on coarse sand or gravel substrates. When the common dragonet is at rest on the seabed its fins are often folded.[5]
Callionymus lyra 02.jpg
Distribution

The common dragonet is found in inshore waters in the eastern North Atlantic from Iceland and Norway in the north through the western coasts of Europe to Mauritania, as well as the islands groups of the Faroes, the British Isles, the Canary Islands, Madeira and the Azores. It also occurs throughout the Mediterranean Sea and the Black Sea.[1]
Habitat and biology

The common dragonet is a demersal species which is occurs from the sublittoral zone to depths of up to 430 metres (1,410 ft), although it is most frequently found between 5 metres (16 ft) and 50 metres (160 ft). It is found in temperate waters with a water temperature of 16–20 °C (61–68 °F). It spends most of its time on the seabed partially buried in sand or shell gravel.[5] When it is buried in the substrate only the head and eyes will protrude and the fish may emerge quickly to feed.[4] They are opportunistic feeders which will prey on whichever suitable prey species are most abundant,[6] it feeds mostly on small invertebrates, such as worms and crustaceans,[7] for example in one study crustaceans were found to make up over 85% of the identifiable diet with the porcelain crab Pisidia longicornis making up 43%.[6] Molluscs, especially cockles, are also preyed upon by common dragonets.[5] Common dragonets are an important prey item of Atlantic cod and pouting in the Irish Sea.[1]

Male common dragonets are territorial and they aggressively defend their territories from other males.[8] Unlike many species of pelagic spawning fish[8] the common dragonet spawns as a pair.[9] They have quite an elaborate courtship in which the male approaches the female, spreading his pectoral fins and erecting both dorsal fins, displaying their colours, while simultaneously repeatedly raising his head and opening his mouth very wide. If the female responds to this display the male becomes more excited and eventually the pair swim, with the female resting on the pectoral fins of the male, vertically to the surface where the eggs and milt are released between their bodies to be fertilised. After fertilisation the eggs drift away in the current.[9][4] The eggs, larvae and postlarvae of common dragonets are pelagic[1] while the juveniles prefer the intertidal zone.[4]
Human uses

This species is of minor importance to local commercial fisheries and can be found displayed in public aquariums.[7]
References

Smith-Vaniz, W.F. (2015). "Callionymus lyra". The IUCN Red List of Threatened Species. 2015: e.T198634A21910105. doi:10.2305/IUCN.UK.2015-4.RLTS.T198634A21910105.en.
B.E. Picton; C.C. Morrow (2016). "Callionymus lyra (Linnaeus, 1758)". Encyclopedia of Marine Life of Britain and Ireland. Museums of Northern Ireland. Retrieved 22 April 2018.
Alwyne Wheeler (1992). The Pocket Guide to Salt Water Fishes of Britain and Europe (1997 ed.). Parkgate Books. p. 138. ISBN 978-1855853645.
Jane Lilley. "Dragonet". British marine Life Study Society. Retrieved 22 April 2018.
Oakley, J.A. (2008). Tyler-Walters H.; Hiscock K. (eds.). "Callionymus lyra Common dragonet". Marine Life Information Network: Biology and Sensitivity Key Information Reviews. Marine Biological Association of the United Kingdom. Retrieved 22 April 2018.
Griffin R; Pearce B & Handy RD (2012). "Dietary preference and feeding selectivity of common dragonet Callionymus lyra in U.K.". Journal of Fish Biology. 8 (3): 1019–1031. doi:10.1111/j.1095-8649.2012.03375.x. PMID 22880734. Abstract
Froese, Rainer; Pauly, Daniel (eds.) (2018). "Callionymus lyra" in FishBase. February 2018 version.
J.C. Hureau (ed.). "Fishes of the NE Atlantic and Mediterranean". Marine Species Identification Portal. ETI Bioinformatics. p. Dragonet (Callionymus lyra). Retrieved 23 April 2018.
Erenest W.L. Holt (1898). "On the Breeding of the Dragonet (Callionymus lyra) in the Marine Biological Association's Aquarium at Plymouth; with a preliminary account of the Elements, and some remarks on the significance of the Sexual Dimorphism". Proceedings of the Zoological Society of London. 66 (2): 281–315. doi:10.1111/j.1096-3642.1898.tb03147.x.

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