All FishesLoricariidaeHypostominaeChaetostoma

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Scientific NameChaetostoma lexa  Salcedo, 2013
Common Name
Type LocalityPeru: Departamento de Huánuco: Provincia de Leoncio Prado:Mariano Dámaso Beraun: vicinity of Tingo María, Cueva de las Pavas, Quebrada Luconyupe (09°22'15.1''S,75°58'32.7''W)
Synonym(s)Loraxichthys lexa
PronunciationKATE oh STOW mah - lex ah
EtymologyGreek, 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.
Hop to next section Species Information
Size 49mm or 1.9" SL. Find near, nearer or same sized spp.
IdentificationThe 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.
SexingThe 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.
Hop to next section Habitat Information
DistributionOnly 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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Hop to next section Husbandry Information
FurnitureWell rounded stones stacked to replicate a river bottom and provide caves.
BreedingSpawns 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.
Hop to next section Further Information
ReferencesZootaxa 3640, pp 557–571, figs 1-2
Registered KeepersNone.
Breeding ReportsNone.
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Last Update2017 Jan 04 13:36 (species record created: 2013 Apr 19 16:40)