Potamotrygon motoro — trnucha skvrnitá
Autor: Motyčka Vladimír
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Třída: Chondrichthyes — paryby
Řád: Myliobatiformes — trnuchy
Čeleď: Potamotrygonidae
Rod: Potamotrygon Garman, 1877
Výskyt:
Jižní Amerika.
Velikost:
50 cm.
