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Hydrolycus armatus is a species of dogtooth characin found in freshwater of tropical South America. [2] It is sometimes known as Payara, [1] or harm, [3] [4] [5] a name it shares with the related H. scomberoides. This predatory fish occasionally makes its way into the aquarium trade, but it requires a very large tank.
The payara, (Hydrolycus scomberoides), is a species of dogtooth tetra. This predatory fish is found in the Amazon Basin in tropical South America. [ 3 ] [ 4 ] It was the first of four species to be described in the genus Hydrolycus .
Cynodontinae is a subfamily of tropical and subtropical South American fishes of the family Cynodontidae.They are characterized by an oblique mouth and very long distinct canines, which are used to capture and stab their prey, other fish that can be up to half the length of the cynodontine itself. [1]
Hydrolycus is a genus of large dogtooth characins from tropical South America, where found in the Amazon and Orinoco basins, as well as rivers of the Guianas. [1] The genus includes the largest dogtooth characins, reaching up to 1.17 m (3.8 ft) in length. [1]
Hydrolycus tatauaia is a species of dogtooth characin found in the Amazon, Orinoco and Essequibo basins in tropical South America. [2] [3] Adults mainly occur in deep and/or fast-flowing rivers. [4]
Drotops armatus is similar in appearance to the genus Phacops, albeit much larger. A significant feature of this species is that it has spines protruding from its exoskeleton, presumably to deter predators. D. armatus has an enlarged glabella covered in rounded pustules, and schizochroal eyes which contained multiple lenses.
Armatocereus (from Latin armatus, "armed" and cereus, "pliant/soft") is a genus of mostly tree-like cacti from South America (Ecuador and Peru). These species have a conspicuous constriction at the end of the annual growth. The flowers are mostly white, with a more or less spiny ovary. The fruits are mostly spiny.
Actaeus is a genus of leanchoiliid megacheiran arthropod, containing the single species Actaeus armatus. It is known from a single specimen recovered from the Middle Cambrian Burgess Shale of British Columbia , Canada , [ 1 ] and it may be actually a poorly preserved specimen of Alalcomenaeus . [ 2 ]