| a new species of amaralia fowler (siluriformes: aspredinidae) from the paraná-paraguay river basin. | a new species of the banjo catfish genus amaralia is described from the paraná-paraguay river basin in central-western brazil, paraguay and northern argentina. amaralia oviraptor is distinguished from its single and allopatric congener, amaralia hypsiura, by the greater number of dorsal-fin rays (3 vs. 2); by the absence of lateral contact between middle and posterior nuchal plates (vs. middle and posterior nuchal plates contacting each other laterally); and by a longer cleithral process (17.4-1 ... | 2016 | 27394356 |