Norway bullhead

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Norway bullhead
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Norway bullhead Bornholm
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Cottidae
Subfamily: Cottinae
Genus: Micrenophrys
Andriashev, 1954
Species:
M. lilljeborgii
Binomial name
Micrenophrys lilljeborgii
(Collett, 1875)
Synonyms
  • Cottus lilljeborgiiCollett, 1875

The Norway bullhead (Micrenophrys lilljeborgii) is a species of marine ray-finned fish belonging to the family Cottidae, the typical sculpins. This species is found in the northeastern Atlantic Ocean.

Contents

Taxonomy

The Norway bullhead was first formally described as Cottus lilljeborgii in 1875 by the Norwegian zoologist Robert Collett with its type locality given as Hardangerfjord. [2] In 1954 the Soviet ichthyologist Anatoly Andriyashev classified this species in the monospecific subgenus Micrenophrys of the genus Taurulus , Micrenophrys is now recognised as a valid genus. [3] The 5th edition of Fishes of the World classifies this genus in the subfamily Cottinae of the family Cottidae [4] but other authorities classify it in the subfamily Psychrolutinae of the family Psychrolutidae. [2]

Etymology

The Norway bullhead's generic name, Micrenophrys prefixes miccro, meaning "small" to Enophrys , a related Cottid genus. Collett did not name the person honoured in the specific name but it is most likely to be the Swedish zoologist Wilhelm Lilljeborg, who Collett referred to extensively. [5]

Description

The Norway bullhead is a small fish with a maximum published standard length of 7.4 cm (2.9 in). [6] There is a complete, rather irregular line of sharp prickles along the base of both dorsal fins. there are no small bony grain-like bumps on the head and any bumps behind the eyes are either very small or absent. The protuberances on the occipital are paired and low. [7] The upper spine on the preoperculum is long and ribust but does not reach the flap of the operculum. There is a small barbel at on the upper jaw at the corner of the mouth. The dorsal fins are supported by 8 or 9 spines and 11 or 12 soft rays while the anal fin has between 6 and 9 soft rays. The overall colour is reddish-olive, marked with 4 dark saddle-like bands on back and upper sides. The head is yellowish in colour with a single dark band. The spiny dorsal fin has a clear black spot. When breeding the males develop a red band on head across the and red blotches on the sides. [8]

Distribution and habitat

The Norway bullhead is found in the northeastern Atlantic Ocean where it is found around Iceland, the Faroe Islands, Scotland, the west and north coasts of Ireland and the southwestern coasts of Scandinavia. It has been reported from the southern North Sea and as far south as Brittany but these records have not been formally published. [1] This is a benthic species of gravel or shell substrates and algal beds at depths from 0 to 100 m (0 to 328 ft) which is able to tolerate temperatures lower than 0 °C (32 °F). [6]

Biology

The Norway bullhead feeds on small crustaceans, such as amphipods and copepods, and small fishes. They spawn in the early Spring laying clumps of demersal eggs on the sea bed which hatch into pelagic larvae. [6]

Related Research Articles

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References

  1. 1 2 Lorance, P.; Florin, A.; Keskin, Ç. (2014). "Micrenophrys lilljeborgii". IUCN Red List of Threatened Species . 2014: e.T18237151A45077948. doi: 10.2305/IUCN.UK.2014-3.RLTS.T18237151A45077948.en . Retrieved 12 November 2021.
  2. 1 2 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Micrenophrys". Catalog of Fishes . California Academy of Sciences . Retrieved 1 February 2023.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Psychrolutinae". Catalog of Fishes . California Academy of Sciences . Retrieved 1 February 2023.
  4. ↑ J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 467–495. ISBN   978-1-118-34233-6.
  5. ↑ Christopher Scharpf & Kenneth J. Lazara, eds. (22 October 2022). "Order Perciformes: Suborder Cottoidea: Infraorder Cottales: Family Cottidae (Sculpins)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 2 February 2023.
  6. 1 2 3 Froese, Rainer; Pauly, Daniel (eds.) (2022). "Micrenophrys lilljeborgii" in FishBase . August 2022 version.
  7. ↑ J-C Huraeu (ed.). "Genus Micrenophrys". Fishes of the North East Atlantic and Mediterranean. Naturalis Biodiversity Center Linnaeus NG. Retrieved 1 February 2023.
  8. ↑ J-C Huraeu (ed.). "Micrenophrys lilljeborgi". Fishes of the North East Atlantic and Mediterranean. Naturalis Biodiversity Center Linnaeus NG. Retrieved 1 February 2023.


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