Arno Goby
Padogobius nigricans
- Endangered
- Card rarity: Epic
- Fish

Padogobius nigricans, the Arno goby, is a species of goby endemic to Italy. It occurs in streams, staying to well-vegetated edge areas. Males of this species reach a length of 12.5 centimetres (4.9 in) TL while the females only reach 7 centimetres (2.8 in) TL.
Classification
- Class
- Actinopterygii
- Order
- Gobiiformes
- Family
- Gobiidae
- Genus
- Padogobius