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|Aphanotorulus emarginatus (Valenciennes, 1840)
L011, Red Fin Thresher Pleco
L035, L108, L116, Tærskesugemalle (Denmark)
|Probably from Brazil.
|Hypostoma squalinum, Hypostomus annae, Hypostomus emarginatus, Hypostomus squalinus, Plecostomus annae, Squaliforma annae, Squaliforma emarginatus, Squaliforma squalina
|ah FAN oh to RULE uss
|Greek, aphanes = hidden + Latin, torulus, -i = muscle, little string.
|400mm or 15.7" SL. Find near, nearer or same sized spp.
|In Aphanotorulus, all species show clear sexual dimorphism and have a generally flatter appearance than other hypostomine genera. The posterior edge of the oral disc is jagged rather than smooth. Aphanotoroulus can be distinguished from Isorineloricaria by having caudal peduncles that do not become greatly lengthened with size and that are oval in cross section (vs. caudal peduncle proportions that get proportionately longer with size and that become round in cross-section), and by having small dark spots (less than half plate diameter) on a light tan background (vs. spots almost as large as lateral plates on a nearly white background.
An elongate species that appears widespread throughout the Amazon and correspondingly has acquired a series of L numbers. We are talking about a very widely distributed, variable species. In terms of distribution and regional variation this species is to the Loricariidae what Corydoras aeneus is to the Callichthyidae. Can be most readily distinguished by its long crescent shaped caudal fin which has a red or orange outer margin.
|Males in breeding condition posses extremely elongate, bristle-like odontodes. These cover the entire back and sides behind the dorsal fin.
|L108 - DATZ 9/1992 p552 L116 - DATZ 10/1992 pp619-620.
*Photo is for reference only