Opercle of Sphoeroides annulatus (internal view)
Maximum known length for this species		44.0 cm TL (male)
Specimen collection		Study collection of P. Béarez (Paris, France), specimen n°MNHN-6497
Specimen determination		Béarez, P. (1994)
Specimen length		28.6 cm SL, 35.5 cm TL (Unknown sex)
Collection site of the specimen		Salango (Ecuador)
Image scale		1 cm
Image source		Bled, L.
Image acquisition		scanner
		Epson Perfection 3200 photo