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Down arrow Cat-eLog Data Sheet
Scientific Name Chaetostoma breve  Regan, 1904
Common Name
Type Locality Eastern Ecuador.
Pronunciation KATE oh STOW mah
Etymology Greek, chaite = hair + Greek, stoma = mouth. 
Down arrow Species Information
Size 300mm or 11.8" 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.
Down arrow Habitat Information
Distribution South America: Zamora River basin in the upper Marañon River drainage, Ecuador.
Amazon, Upper Amazon, Marañón, Upper Marañón, Santiago, Zamora (click on these areas to find other species found there)

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IUCN Red List Category Data Deficient, 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 Transactions of the Zoological Society of London v. 17 (pt 3, no. 1), pp 247, Pl. 13 (fig. 3).
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Last Update 2020 Oct 17 04:21 (species record created: 2011 Sep 24 05:48)