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Down arrow Cat-eLog Data Sheet
Scientific Name Chaetostoma marmorescens  Eigenmann & Allen, 1942
Common Name
Type Locality Huanacachupa Creek near Huanuco, River Tingo, Peru, elevation 6000 feet.
Pronunciation KATE oh STOW mah
Etymology Greek, chaite = hair + Greek, stoma = mouth. 
Down arrow Species Information
Size 135mm or 5.3" 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: Upper Huallaga River basin in Marañon River drainage, Peru.
Amazon, Upper Amazon, Marañón, Huallaga (click on these areas to find other species found there)

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IUCN Red List Category Vulnerable, 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 Unreported.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Fishes of western South America, pp 193
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Last Update 2020 Sep 16 01:05 (species record created: 2005 Oct 07 00:00)