Hemigrammus filamentosus spec. nov. - der Südamerikanische Fadensalmler, ein neuer Salmler (Teleostei: Characiformes: Characidae) aus dem Araguaya-Becken in Brasilien
2011
Zarske,Axel
Hemigrammus fi lamentosus spec. nov. from the rio Araguaya basin is described. There are a typical and a pathological form of the species. The species is closely related with H. taphorni Benine & Lopez, 2007. Typically are (1) the sexualdimorphism and sexualdichromatism, (2) the development of a humeral spot (no humeral spot in H. fi lamentosus spec. nov. vs. a humeral spot in H. taphorni), (3) the development of a caudal spot (a longitudinal band in the caudal region of the body and no caudal spot in H. fi lamentosus spec. nov. vs. a caudal spot in H. taphorni), (4) the number of lateral scales (32 to 35 in H. fi lamentosus spec. nov. vs. 30 to 32 in H. taphorni).
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