All FishesLoricariidaeHypostominaeLasiancistrus

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Scientific Name Lasiancistrus sp. (L033)  , 1989
Common Names L033, Plettet Halvfinnesugemalle
Spotted Half Fin Pleco
Type Locality Brazil: Rio Araguaia, ParĂ¡ State
Pronunciation LASS ee an SISS truss
Etymology Greek, lasios, -a, -on = hairy + Greek, agkistron = hook 
Hop to next section 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.
Hop to next section Habitat Information
Amazon, Lower Amazon, Tocantins, Lower Tocantins, Araguaia (click on these areas to find other species found there)

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Hop to next section Husbandry Information
Breeding Unreported.
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference DATZ 7/1989, pp 430-432.
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Last Update 2022 Jan 13 12:59 (species record created: 2004 May 11 00:00)