Bathylutichthys

Bathylutichthys a genus of marine ray-finned fishes which is the only genus in the monotypic family Bathylutichthyidae, known as the Antarctic sculpins. These fishes are found in the Southern Ocean.

Bathylutichthys
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Superfamily: Cottoidea
Family: Bathylutichthyidae
Balushkin & Voskoboynikova, 1990
Genus: Bathylutichthys
Balushkin & Voskoboinikova, 1990
Type species
Bathylutichthys taranetzi
Balushkin & Voskoboinikova, 1990[1]

Taxonomy

Bathylutichthys was first proposed as a monospecific genus in 1990 by the Russian ichthyologists Arkady Vladimirovich Balushkin and Olga Stepanovna Voskoboinikova when they described Bathylutichthys taranetzi from off South Georgia. A second species, Bathylutichthys balushkini was described by Voskoboinikova from the Meteor Shoal in the southeastern Atlantic.[2] The 5th edition of Fishes of the World classifies the genus in the monotypic family Bathylutichthyidae,[3] other authorities place the genus in the subfamily Psychrolutinae in the family Psychrolutidae.[1] Phylogenetically the taxon has been argued to be intermediate between the Psychrolutidae and the two families making up the superfamily Cyclopteroidea, meaning that those two families would not be supported as a superfamily within the Cottoidei.[4]

Species

There are currently 2 recognized species in this genus:

Characteristics

Bathylutichthys sculpins have naked, scaleless bodies. The space between the eyes is broad. There is a pair of long barbels on the lower jaw at the corner of the mouth> They have one dorsal fin with the anterior part embedded under the skin. This fin has with 13 spines and 28 soft rays while the anal fin is supported by 36 soft rays. The pelvic fin contains 3 soft rays. All the soft rays in the fins are simple. There are no teeth on the roof of the mouth.[3]

References
  1. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Psychrolutinae". Catalog of Fishes. California Academy of Sciences. Retrieved 14 March 2023.
  2. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Bathylutichthys". Catalog of Fishes. California Academy of Sciences. Retrieved 14 March 2023.
  3. 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. Archived from the original on 2019-04-08. Retrieved 2023-03-14.
  4. Voskoboinikova, O.S. (2015). "Comparative osteology of Bathylutichthys balushkini and relationship of the family Bathylutichthyidae (Cottoidei)". Journal of Ichthyology. 55: 303–310. doi:10.1134/S0032945215030157.
  5. Voskoboinikova, O.S. (2014). "New species Bathylutichthys balushkini sp. n. from the Meteor Shoal and the taxonomic position of the family Bathylutichthyidae (Cottoidei)". Journal of Ichthyology. 54 (8): 598–601. doi:10.1134/S0032945214050129.
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