Opercle of Gerres cinereus (external view)
Maximum known length for this species		41.0 cm TL (male)
Specimen collection		Study collection of P. Béarez (Paris, France), specimen n°MNHN-6541
Specimen determination		Béarez, P. (1994)
Specimen length		24.0 cm SL, 32.4 cm TL (Male)
Collection site of the specimen		Puerto Lopez (Ecuador)
Image scale		1 cm
Image source		Bled, L.
Image acquisition		scanner
		Epson Perfection 3200 photo