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Down arrow Cat-eLog Data Sheet
Scientific Name Isorineloricaria villarsi  (Lütken, 1874)
Common Names L153, Northern Thresher Pleco
Type Locality Caracas, Venezuela.
Synonym(s) Hypostomus villarsi, Plecostomus villarsi, Squaliforma villarsi
Pronunciation vill ARSS eye
Etymology Greek, isos = equal + Greek, rhinos = nose + Latin, lorica, loricare = cuirass of corslet of leather. 
Down arrow Species Information
Size 170mm or 6.7" SL. Find near, nearer or same sized spp.
Identification Isorineloricaria can be distinguished from Aphanotoroulus by having caudal peduncle proportions that get proportionately longer with size and that become round in cross-section (vs. caudal peduncles that do not become greatly lengthened with size and that are oval in cross section) and by having spots almost as large as lateral plates on a nearly white background (vs. small dark spots (less than half plate diameter) on a light tan background).
Sexing Mature males will develop odontodal growths on the leading pectoral fin rays and the lower caudal fin ray and peduncle.
General Remarks Aqualog L093 and L195 matches DATZ L093. L195 in DATZ is a picture of an adult fish. Aqualog also shows this fish as L192, but the DATZ L192 is, most likely, as species of Hypostomus.
Down arrow Habitat Information
Distribution Venezuela.
Valencia (click on these areas to find other species found there)
Orinoco, Middle Orinoco, Apure, Guarico (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
pH 6.0 - 7.2
Temperature 21.0-23.0°C or 69.8-73.4°F (Show species within this range)
Down arrow Husbandry Information
Feeding Primarily a vegetarian, especially when younger.
Furniture Needs adequate refuge and a reasonable amount of swimming space because of its flighty nature.
Compatibility Peaceful and not territorial. An active, pretty pleco for the larger community tank.
Breeding Unreported.
Breeding Reports There is no breeding report.
Down arrow Further Information
Reference Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn, Aaret 1873 (nos 13-14), pp 211 [10].
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Last Update 2020 Sep 04 03:40 (species record created: 2002 Jun 14 00:00)