In addition the males of Astyanax tumbayaensis have bony
hooks in the dorsal, pelvic, anal and caudal fins.
A key for Argentinean species of Astyanax is provided. More
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Order : Characiformes
Family : Characidae
Genus : Astyanax
Species : Astyanax tumbayaensis
Authority : Miquelarena & Menni, 2005