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Down arrow Cat-eLog Data Sheet
Scientific Name Chaetostoma lexa  (Salcedo, 2013)
Common Name
Type Locality Mariano Dámaso Beraun, vicinity of Tingo María, Cueva de las Pavas, Quebrada Luconyupe, 9°22'15.1"S, 75°58'32.7"W, Provincia de Leoncio Prado, Departamento de Huánuco, Peru.
Synonym(s) Loraxichthys lexa
Pronunciation KATE oh STOW mah - lex ah
Etymology Greek, chaite = hair + Greek, stoma = mouth. The species lexa is in recognition of Alexandra Keane, sustainability activist. At the time of the publication of the species description was a Political Sciences student at the College of Charleston, USA.
Down arrow Species Information
Size 49mm or 1.9" 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 Only known from clear water tributaries of the Río Huallaga near Tingo María (725–780 m), Departament of Huánuco, Peru.
Amazon, Upper Amazon, Marañón, Huallaga (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
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 Zootaxa 3640 (no. 4), pp 560, Figs. 1-2, 4b, 5b.
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Last Update 2019 Oct 26 07:55 (species record created: 2013 Apr 19 16:40)