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  • Chaetostoma taczanowskii
  • Chaetostoma taczanowskii
Down arrow Cat-eLog Data Sheet
Scientific Name Chaetostoma taczanowskii  Steindachner, 1882
Common Name
Type Locality Upper rio Huambo basin, Río de la Tortora, 6°26'S, 77°18'W, upper Amazon system, Peru.
Pronunciation KATE oh STOW mah
Etymology Greek, chaite = hair + Greek, stoma = mouth. The specific epithet is named for Polish zoologist Wladyslaw Taczanowski, a prominent 19th century zoologist who wrote several significant studies including Birds of Poland (1882) and Ornithology of Peru (1884-86).
Down arrow Species Information
Size 170mm or 6.7" SL. Find near, nearer or same sized spp.
Identification The genus Chaetostoma is not straightforward to identify, but as a general rule, the species has spines behind the gill-cover (interopercular odontodes), no plates on the abdomen, and aside from C. platyrhynchus also lack plates on the snout edge. Different from Ancistrus by not having fleshy tentacles on the snout.
Sexing The males have however a larger and broader head, slimmer ventral sides and disproportionately large pelvic fins. Perhaps the over-sized pelvic fins play a large role in the fertilization of the eggs. By inverting these over the clutch of eggs, they prevent the sperm cells being carried away by fast water current.
General Remarks Fishbase reports 170 mm TL.
Down arrow Habitat Information
Distribution South America: Huallaga and Urubamba River basins in Peru.
Amazon, Upper Amazon, Marañón, Huallaga (click on these areas to find other species found there)
Amazon, Upper Amazon, Marañón, Ucayali, Urubamba (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2014.
Down arrow Husbandry Information
Furniture Well rounded stones stacked to replicate a river bottom and provide caves.
Breeding Spawns in shallow, fast flowing water on the underneath of a flat object. Male, upside down, guards an adhesive clutch of eggs by, more or less, covering it with his body.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 19 (no. 19), pp 177.
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Last Update 2020 Sep 20 09:43 (species record created: 2005 Oct 07 00:00)