Abstract
In this study has document a new locality and thus a southern extension of the distribution of the lungfish Lepidosiren paradoxa to the coast of the Entre Rios Province in the lower Paraná River. This finding increases the range of L. paradoxa by approximately 500 km and represents the third southern record of this species on the south of South America. Additionally, as this region has been relatively well sampled both during past decades and currently, I discuss possible reasons why this range extension has been observed only recently.
Highlights
Lungfish (Dipnoi) are a unique clade of sarcopterygian fishes, distributed globally (Bemis 1983; Marshall 1987)
This study documents a new locality of the lungfish Lepidosiren paradoxa on the coast of the Entre Rios Province in the lower Paraná River
Lepidosiren paradoxa is characterised by 5 gill arches, 4 gill clefts, very elongate body, filamentous pectoral and pelvic fins, small scales, paired swimbladder, and larvae with external gills (Nelson et al 2016)
Summary
Lungfish (Dipnoi) are a unique clade of sarcopterygian fishes, distributed globally (Bemis 1983; Marshall 1987). This study documents a new locality of the lungfish Lepidosiren paradoxa on the coast of the Entre Rios Province in the lower Paraná River. South American lungfish; Entre Ríos; Paraná River
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