Overview

Comprehensive Description

Biology

Lives on the bottom and feeds on mollusks, crustaceans, and organic debris. Frequently occurs on sandy bottoms. Often escapes into the sediment where it hides among the anfractuosities of the submerged stocks (Ref. 35381). A juvenile in a stream of the rio Araguaia was recorded to clean the piscivorous characin Hoplias cf. malabaricus (Ref. 50806).
  • Sabaj, M.H. and C.J. Ferraris Jr. 2003 Doradidae (Thorny catfishes). p. 456-469. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37054)
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Distribution

South America: Amazon, Tocantins, Parnaíba, Orinoco, Essequibo River basins and coastal drainages in French Guiana and Suriname (Ref. 37054). Reported from Argentina (Ref. 56308).
  • Sabaj, M.H. and C.J. Ferraris Jr. 2003 Doradidae (Thorny catfishes). p. 456-469. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37054)
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Amazon, Tocantins, Parnaíba, Orinoco and Essequibo River basins and coastal drainages in French Guiana and Suriname: Argentina, Bolivia, Brazil, Colombia, French Guiana, Guyana, Peru, Suriname and Venezuela. But perhaps only coastal drainages of Suriname
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Physical Description

Morphology

Dorsal spines (total): 1; Dorsal soft rays (total): 6; Analsoft rays: 10 - 11
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Size

Maximum size: 220 mm TL
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Max. size

24.0 cm SL (male/unsexed; (Ref. 37054))
  • Sabaj, M.H. and C.J. Ferraris Jr. 2003 Doradidae (Thorny catfishes). p. 456-469. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 37054)
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Ecology

Habitat

Environment

demersal; freshwater; pH range: 5.8 - 7.5; dH range: 2 - 20
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Trophic Strategy

Lives on the bottom and feeds on mollusks, crustaceans, and organic debris. Frequently occurs on sandy bottoms. Often escapes into the sediment where it hides among the anfractuosities of the submerged stocks (Ref. 35381). A juvenile in a stream of the rio Araguaia was recorded to clean the piscivorous characin Hoplias cf. malabaricus (Ref. 50806). The study indicated that the cleaning behavior is probably restricted to the juvenile phase. The species shifts its diet as it grows, facultative cleaner (Ref. 50806).
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Diseases and Parasites

Raphidascaroides Infection 1. Parasitic infestations (protozoa, worms, etc.)
  • Moravec, F. 1998 Nematodes of freshwater fishes of the neotropical region. 464 p. Praha, Academy of Sciences of the Czech Republic. (Ref. 51153)
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Platydoras costatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 4
Species With Barcodes: 1
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: minor commercial; aquarium: commercial
  • Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott 1991 World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)
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Wikipedia

Platydoras costatus

Platydoras costatus, the Raphael catfish, is a species of thorny catfish of the genus Platydoras widespread throughout northern South America down to Argentina.[1] Although long thought to be the striped raphael catfish, this is not the case; the striped raphael catfish is actually Platydoras armatulus.[2] This species grows to a length of 24.0 centimetres (9.4 in) SL.[1] This fish is a minor component of local fisheries and is also found in the aquarium trade.[1]

References[edit]

  1. ^ a b c Froese, Rainer and Pauly, Daniel, eds. (2011). "Platydoras costatus" in FishBase. December 2011 version.
  2. ^ Piorski, Nivaldo M.; Garavello, Julio C.; Arce H., Mariangeles; Pérez, Mark H. Sabaj (2008). "Platydoras brachylecis, a new species of thorny catfish (Siluriformes: Doradidae) from northeastern Brazil". Neotropical Ichthyology 6 (3): 481–494. doi:10.1590/S1679-62252008000300021. 


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