Cat-eLog Right Arrow Loricariidae Right Arrow Hypostominae Right Arrow Chaetostoma

  • Chaetostoma setosum
  • Chaetostoma setosum
Jump to next section Cat-eLog Data Sheet
Scientific NameChaetostoma setosum  (Boulenger, 1887)
Common Name
Type LocalityAndes of Colombia.
Synonym(s)Chaetostomus setosus, Dolichancistrus setosus, Lasiancistrus setosus
PronunciationKATE oh STOW mah
EtymologyGreek, chaite = hair + Greek, stoma = mouth. 
Jump to next section Species Information
Size 120mm or 4.7" 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.

The species is described as having 7 or 8 branches rays in the dorsal fin. This differentiates it from L225 which has 9 or 10.
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.
Jump to next section Habitat Information
DistributionAndes of Colombia, river basin unknown.
Jump 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.
Jump to next section Further Information
ReferencesAnnals and Magazine of Natural History (Series 5) v. 19 (no. 113)
Registered KeepersNone.
Breeding ReportsNone.
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Last Update2017 Jan 04 13:54 (species record created: 2011 Jul 10 13:57)