AquaticRepublic.com - Lasiancistrus sp. (L033) (Loricariidae) All Fishes

Close-up of caudal fin
Close-up of head

All Fishes Data Sheet
Scientific Name	Lasiancistrus sp. (L033) , 1989
Common Names	L033, Plettet Halvfinnesugemalle Spotted Half Fin Pleco
Type Locality	Brazil: Rio Araguaia, Pará State
Pronunciation	LASS ee an SISS truss
Etymology	Greek, lasios, -a, -on = hairy + Greek, agkistron = hook
Species Information
Size	120mm or 4.7" 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. Similar to L178 but with larger, more widely spaced white spots. In mature individuals the lower half of the dorsal fin is dark red. This feature is also exhibited by L178, which originates from the Tocantins (into which the Araguaia flows). Not all L033 exhibit the red in the dorsal fin.
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	Amazon, Lower Amazon, Tocantins, Lower Tocantins, Araguaia (click on these areas to find other species found there) Log in to view data on a map.
Husbandry Information
Breeding	Unreported.
Breeding Reports	There is no breeding report.
Further Information
Reference	DATZ 7/1989, pp 430-432.
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 2 records of this fish being seen, view them all.
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Last Update	2022 Jan 13 12:59 (species record created: 2004 May 11 00:00)