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Two new species of the genus hyphessobrycon pisces ostariophysi characidae from paraguay hyphessobrycon guarani new species and hyphessobrycon procerus new species


Two new species of the genus hyphessobrycon pisces ostariophysi characidae from paraguay hyphessobrycon guarani new species and hyphessobrycon procerus new species



Bonner Zoologische Beitraege 38(4): 307-314



Two new species are described from eastern Paraguay: Hyphessobrycon guarani n. sp. (from Rio Alto Parana) and Hyphessobrycon procerus n. sp. (from Rio Guyrau-gua). Both species show instability in the number of internal premaxillary teeth, their number varying from four to five. While Hyphessobrycon procerus seems to be quite close to H. melanopleurus Ellis from SE Brasil, the affinities of H. guarani are uncertain; it is one of the rare species of the genus having a black spot at the distal part of the dorsal fin.

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