Monacoa grimaldii
| Mirrorbelly | |
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| Fresh specimen | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Argentiniformes |
| Family: | Opisthoproctidae |
| Genus: | Monacoa |
| Species: | M. grimaldii
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| Binomial name | |
| Monacoa grimaldii (Zugmayer, 1911)
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| Synonyms | |
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Opisthoproctus grimaldii Zugmayer, 1911 | |
Monacoa grimaldii is a species of fish in the family Opisthoproctidae, the barreleyed fish or spookfish. It has a body length of 8 cm (3.1 in) SL.[2]
Taxonomy
[edit]The species was included in the genus Opisthoproctus from its description in 1911 until a 2016 review was made using fresh specimens, which found that "O." grimaldii is too distinct to be grouped with O. soleatus (the type species of Opisthoproctus); along with two newly recognized species, this species of barreleye was moved to the resurrected genus Monacoa, coined by Whitley in 1943. However, the genus Monacoa is still the sister genus to Opisthoproctus, sharing the same flat belly covered by enlarged scales (the "sole").[3][4]
Common names
[edit]Monacoa grimaldii has been referred to as the mirrorbelly spookfish,[5] mirrorbelly, flatiron fish, Grimaldi's barreleye, or simply barreleye.[1][2]
Habitat and distribution
[edit]The species is typically mesopelagic, but it has been recorded from depths of 0 to 4,750 metres (0 to 15,584 ft). Sources disagree on its exact distribution. According to Poulsen and colleagues, M. grimaldii is known with certainty only from the Atlantic Ocean, with records from the Pacific Ocean representing other species of Monacoa.[3] However, FishBase and Catalog of Fishes includes specimens caught in the Pacific, and in CoF's case, the Indian Ocean as well.[6][2]
References
[edit]- ^ a b Iwamoto, T. (2015). "Opisthoproctus grimaldii". IUCN Red List of Threatened Species. 2015: e.T18140829A21406957. doi:10.2305/IUCN.UK.2015-4.RLTS.T18140829A21406957.en. Retrieved 10 June 2022.
- ^ a b c Froese, Rainer; Pauly, Daniel (eds.). "Monacoa grimaldii". FishBase. February 2022 version.
- ^ a b Poulsen, Jan Yde; Sado, Tetsuya; Hahn, Christoph; Byrkjedal, Ingvar; Moku, Masatoshi & Miya, Masaki (2016). "Preservation obscures pelagic deep-sea fish diversity: doubling the number of sole-bearing opisthoproctids and resurrection of the genus Monacoa (Opisthoproctidae, Argentiniformes)". PLOS ONE. 11 (8): e0159762. Bibcode:2016PLoSO..1159762P. doi:10.1371/journal.pone.0159762. PMC 4980007. PMID 27508419.
- ^ Bailly, Nicolas. "Monacoa Whitley, 1943". marinespecies.org. World Register of Marine Species. Retrieved 1 April 2025.
- ^ Flannery, Tim; Schouten, Peter (2004). Astonishing Animals: Extraordinary Creatures and the Fantastic Worlds They Inhabit. New York: Grove/Atlantic Monthly Press. p. 186. ISBN 9780802194176.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Monacoa grimaldii". Catalog of Fishes. California Academy of Sciences. Retrieved 10 June 2022.
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