Callorhinchus callorynchus

Callorhinchus callorynchus, the elephantfish or cockfish, is a species of fish in the family Callorhinchidae found in Peru, Chile, Argentina, Uruguay, and southern Brazil. Its natural habitat is open seas.

For the other species sometimes referred to as elephantfish, see Elephant fish.

Callorhinchus callorynchus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Chimaeriformes
Family: Callorhinchidae
Genus: Callorhinchus
Species:
C. callorynchus
Binomial name
Callorhinchus callorynchus
American elephantfish range.[2]

Being a holocephalan from the southwestern region of the Atlantic, C. callorynchus is a vital resource for fisheries in Argentina. A study was conducted on the reproductive biology of the cockfish by Melisa A. Chierichetti from UNMDP, which found that there was a presence of sexual dimorphism, where the females were larger and heavier than the males of that population.[3]:7 Another aspect of this study had discovered that the relative fecundity rate of the C. callorynchus population was significantly low because the females were in the resting stage of their reproductive cycle. Also, the males in the population weren't mature, thus the population was found to not be highly reproductive.[3]:6 This information was expected to be helpful in implementing methods for conservation and reduced over-fishing.[3]:2

References
  1. Finucci, B. & Cuevas, J.M. (2020). "Callorhinchus callorynchus". IUCN Red List of Threatened Species. 2020: e.T63107A3117894. Retrieved 17 July 2020.CS1 maint: multiple names: authors list (link)
  2. IUCN (International Union for Conservation of Nature) 2007. Callorhinchus callorynchus. In: IUCN 2015. The IUCN Red List of Threatened Species. Version 2015.2. "Archived copy". Archived from the original on 2014-06-27. Retrieved 2013-09-28.CS1 maint: archived copy as title (link). Downloaded on 24 July 2015.
  3. Chierichetti, Melisa A.; Scenna, Lorena B.; Giácomo, Edgardo E. Di; Ondarza, Paola M.; Figueroa, Daniel E.; Miglioranza, Karina S. B. (2017). "Reproductive biology of the cockfish, Callorhinchus callorynchus (Chondrichthyes: Callorhinchidae), in coastal waters of the northern Argentinean Sea". Neotropical Ichthyology. 15 (2). doi:10.1590/1982-0224-20160137. ISSN 1679-6225.
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