Brochis

Brochis

Brochis
Brochis multiradiatus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Siluriformes
Family: Callichthyidae
Subfamily: Corydoradinae
Genus: Brochis
Cope, 1871[1]
Type species
Callichthys splendens
Species

See text

Synonyms[1]
  • Chaenothorax Cope, 1878

Brochis is a genus of freshwater ray-finned fish belonging to the family Callichthyidae, the armoured catfishes, and the subfamily Corydoradinae, the corys. Before the recent resurrection of the genus, these species were grouped in the genus Corydoras. The catfishes in this genus are found in South America.

Taxonomy

Brochis was erected by Edward Drinker Cope on 1871. Before 2024, it was in a limbo and considered defunct by most scientific authorities,[2] being considered as a junior synonym or subgenus of Corydoras.[3] It was formally resurrected and revalidated in a phylogenomic analysis carried out in 2024.[4] B. difluviatilis is recognized as the basalmost species of Corydoradini, exhibiting several plesiomorphic features compared to the other species of Corydoras.[3][5]

Etymology

The generic name, Brochis, is derived from the Greek βρόχος meaning "loop", referring to the diagnostic arrangement of the barbels around the mouth.[6]

Morphology

There are several morphological features that validate the usage of Brochis as a genus, such as a more lyre-like tail, and more decisively, the extended dorsal fins that have more rays than those of Corydoras.[7] Corydoras have 7-10 rays on their dorsal fins, while Brochis have 10–18.[8] The three species traditionally kept in the genus Brochis before its resurrection (B. splendens,B. britskii, and B. multiradiatus) are very large for their family, as several species can breach 8 centimetres (3.1 in) in length. Brochis splendens is the largest, attaining a maximum size of 9.9 centimetres (3.9 in) and 40 g (1.4 oz).[9]

Species

As of August 2025, there are 43 extant species in this genus (as recognized by Eschmeyer's Catalog of Fishes):[10]

References

  1. ^ a b c Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Genera in the family Corydoradinae". Catalog of Fishes. California Academy of Sciences. Retrieved 3 December 2025.
  2. ^ "Brochis". Integrated Taxonomic Information System.
  3. ^ a b Marcelo Ribeiro de Britto (January 2009) [Dec 2003]. "Phylogeny of the subfamily Corydoradinae Hoedeman, 1952 (Siluriformes: Callichthyidae), with a definition of its genera". Proceedings of the Academy of Natural Sciences of Philadelphia. 153: 119–154. doi:10.1635/0097-3157(2003)153[0119:POTSCH]2.0.CO;2 – via ResearchGate.
  4. ^ Angelica C Dias; Luiz F C Tencatt; Fabio F Roxo; Gabriel de Souza da Costa Silva; Sérgio A Santos; Marcelo R Britto; Martin I Taylor; Claudio Oliveira (March 2025). "Phylogenomic analyses in the complex Neotropical subfamily Corydoradinae (Siluriformes: Callichthyidae) with a new classification based on morphological and molecular data". Zoological Journal of the Linnean Society. 203 (3) zlae053. doi:10.1093/zoolinnean/zlae053.
  5. ^ Britto M.R.; Castro R.M.C. (2002). "New Corydoradine Catfish (Siluriformes: Callichthyidae) from the Upper Paraná and São Francisco: The Sister Group of Brochis and Most of Corydoras Species". Copeia. 2002 (4): 1006–1015. doi:10.1643/0045-8511(2002)002[1006:nccscf]2.0.co;2. S2CID 85724991.
  6. ^ Christopher Scharpf (18 October 2025). "Family CALLICHTHYIDAE Bonaparte 1835 (Armored Catfishes)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. Retrieved 3 December 2025.
  7. ^ "Brochis splendens". tfhmagazine.
  8. ^ "Brochis britskii and Brochis cf. splendens CW 35". Aquarium Glaser GmbH. Rodgau, Germany. 25 March 2011. Retrieved 23 April 2024.
  9. ^ Froese, Rainer; Pauly, Daniel (eds.). "Corydoras splendens". FishBase.
  10. ^ Fricke, Ron; Eschmeyer, William N. & van der Laan, Richard (eds.). "Species in the genus Brochis". Catalog of Fishes. California Academy of Sciences. Retrieved 20 August 2025.
  11. ^ Tencatt, Luiz Fernando Caserta; Ohara, Willian Massaharu (30 March 2016). "Two new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the rio Madeira basin, Brazil". Neotropical Ichthyology. 14 (1) e150063. doi:10.1590/1982-0224-20150063. ISSN 1982-0224. Retrieved 23 April 2024.
  12. ^ Ottoni, Felipe Polivanov; Barbosa, Maria A.; Katz, Axel M. (September 2016). "A new Corydoras from floodplain swamps of the São Francisco river basin, northeastern Brazil". Spixiana. 39 (1): 131–140. ISSN 0341-8391. Retrieved 23 April 2024.
  13. ^ Tencatt, L.F.C.; Britto, M.R. (2016). "A new Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the rio Araguaia basin, Brazil, with comments about Corydoras araguaiaensis Sands, 1990". Neotropical Ichthyology. 14 (1) e150062. doi:10.1590/1982-0224-20150062.

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