Doradidae
| Doradidae | |
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| Amblydoras monitor | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Siluriformes |
| Superfamily: | Doradoidea |
| Family: | Doradidae Bleeker, 1858 |
| Genera[4] | |
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Acanthodoras | |
The Doradidae are a family of catfishes also known as thorny catfishes, raphael catfishes or talking catfishes. These fish are native to South America, primarily the Amazon basin and the Guianas.
Doradids are omnivorous.[5]
Taxonomy
[edit]As of 2007, 31 genera and 78 species are in this family.[1] Wertheimeria is considered to be the sister taxon to all other doradids.[6] This family is monophyletic and contains the subfamilies Doradinae, Astrodoradinae and Wertheimerinae.[3]
The Astrodoradinae contain the genera Amblydoras, Anadoras, Astrodoras, Hypodoras, Merodoras, Physopyxis, and Scorpiodoras.
Distribution
[edit]Doradids occur in most South American basins, though they are absent from the Pacific Coast drainages and from coastal drainages south of the Río de la Plata.[6] About 70% of the valid species occur in the Amazon basin; the Orinoco basin harbors about 22 species and ranks second in species richness.[6] Conversely, only two species of doradids have been described from Brazilian eastern coastal basins: Wertheimeria maculata from the Jequitinhonha and Pardo rivers and Kalyptodoras bahiensis from the Paraguaçu River.[6]
Appearance and anatomy
[edit]Doradids are easily recognized by a well-developed nuchal shield in front of the dorsal fin, as well as well-developed bony lumps along the lateral line that form thorny scutes.[1] Also, doradids typically have three pairs of barbels (no nasal barbels), an adipose fin, and four to six rays on the dorsal fin with a spine on the anterior (first) ray.[7] These fish are sometimes called "talking catfish" because of their ability to produce sound by moving their pectoral spine or vibrating their swim bladder.[7] Sizes range from 3.5 cm (1.4 in) SL in Physopyxis lyra to 120 cm (47 in) FL and 20 kg (44 lb) in Oxydoras niger.[6]
See also
[edit]References
[edit]- ^ a b c Higuchi, Horácio; Birindelli, José L. O.; Sousa, Leandro M.; Britski, Heraldo A. (2007). "Merodoras nheco, new genus and species from Rio Paraguay basin, Brazil (Siluriformes, Doradidae), and nomination of the new subfamily Astrodoradinae" (PDF). Zootaxa. 1446: 31–42. doi:10.11646/zootaxa.1446.1.3. S2CID 86157696. Retrieved 2009-06-24.
- ^ Birindelli, J.L.O. & Sabaj Pérez, M. (2011): Ossancora, new genus of thorny catfish (Teleostei: Siluriformes: Doradidae) with description of one new species. Proceedings of the Academy of Natural Sciences of Philadelphia, 161: 117–152.
- ^ a b Birindelli, J.L.O. (2014): Phylogenetic relationships of the South American Doradoidea (Ostariophysi: Siluriformes). Neotropical Ichthyology 12(3): 451–564.
- ^ Ferraris, Carl J. Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 1–628. doi:10.11646/zootaxa.1418.1.1. Retrieved 2009-06-24.
- ^ Milhomem, Susana Suely Rodrigues; de Souza, Augusto Cesar Paes; Nascimento, Aline Lira do; Carvalho, Jaime Ribeiro Jr.; Feldberg, Eliana; Pieczarka, Julio Cesar; Nagamachi, Cleusa Yoshiko (2008). "Cytogenetic studies in fishes of the genera Hassar, Platydoras and Opsodoras (Doradidae, Siluriformes) from Jarí and Xingu Rivers, Brazil". Genetics and Molecular Biology. 31: 256–260. doi:10.1590/S1415-47572008000200017.
- ^ a b c d e Eler, Eduardo S.; Dergam, Jorge A.; Vênere, Paulo C.; Paiva, Lílian C.; Miranda, Gabriela A.; Oliveira, Alessandro A. (2007). "The karyotypes of the thorny catfishes Wertheimeria maculata Steindachner, 1877 and Hassar wilderi Kindle, 1895 (Siluriformes: Doradidae) and their relevance in doradids chromosomal evolution". Genetica. 130 (1): 99–103. doi:10.1007/s10709-006-0023-4. PMID 16897457. S2CID 9573024.
- ^ a b Nelson, Joseph S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7.
External links
[edit]
- The Family Doradidae or "Talking Catfishes" Article on Scotcat.com by Chris Ralph
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