AquaticRepublic.com - Lasiancistrus heteracanthus (Loricariidae) All Fishes

Eggs deposited in wooden hollow
Video
Ventral view
Close-up of caudal fin
Close-up of caudal fin
Close-up of head
Close-up of head
Close-up of dorsal fin

All Fishes Data Sheet
Scientific Name	**Lasiancistrus heteracanthus** (Günther, 1869)
Common Name
Type Locality	Upper Amazon River basin, Peru.
Synonym(s)	Chaetostomus heteracanthus
Pronunciation	LASS ee an SISS truss
Etymology	Greek, lasios, -a, -on = hairy + Greek, agkistron = hook
Species Information
Size	153mm or 6" SL. Find near, nearer or same sized spp.
Identification	Adult Lasiancistrus can be separated from all other loricariids by the presence of whisker-like odontodes on the cheeks. In addition, they have evertible cheek odontodes; three rows of plates on the caudal peduncle; and a modified, bar-shaped opercle. The caudal fin is slightly emarginate to forked, with the lower lobe longer than upper. Nuptial males have tentacules on the pectoral-fin spines longer than their associated odontodes; and transluscent tentacules on the snout that have odontodes associated with them. Nuptial males lack hypertrophied odontodes on top of the head and lack long, bristle-like odontodes on the leading edge of the pectoral-fin spine.
Sexing	Snout of nuptial males almost square (vs. rounded in females and juveniles). Adult males of most species (except Lasiancistrus tentaculatus) with whisker-like odontodes at anterolateral corner of snout; males of L. tentaculatus have tentacules instead of whisker-like odontodes along anterior margin of snout. Nuptial males have tentacules longer than their associated odontodes on the pectoral-fin spine.
Habitat Information
Distribution	South America: Marañon River basin, Peru. Amazon, Upper Amazon, Marañón (click on these areas to find other species found there) Login to view the map.
IUCN Red List Category	Least Concern , range map and more is available on the IUCN species page. Last assessed 2014.
Husbandry Information
Breeding	Unreported.
Breeding Reports	There is no breeding report.
Further Information
Reference	Proceedings of the Zoological Society of London 1869 (pt 2), pp 425, Figs. 3-4.
Registered Keepers	There is no registered keeper.
Wishlists	Love this species? Click the heart to add it to your wish list. There is no wish to keep this species.
Spotters	Spotted this species somewhere? Click the binoculars! There are 4 records of this fish being seen, view them all.
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	LFS label creator ARN ref:1.4.84.1454
Last Update	2025 Jan 02 01:40 (species record created: 2006 Dec 25 13:32)