| Urostyle of Acanthurus xanthopterus (anterior view) | ||
| Maximum known length for this species | 70.0 cm TL (male) | |
| Specimen collection | Study collection of P. Béarez (Paris, France), specimen n°MNHN-9016 | |
| Specimen determination | Béarez, P. (2003) | |
| Specimen length | 16.0 cm SL, 22.0 cm TL (Unknown sex) | |
| Collection site of the specimen | Mazatlan (Mexico) | |
| Image scale | 1 cm | |
| Image source | Bled, L. | |
| Image acquisition | scanner | |
| Epson Perfection 3200 photo | ||