Sciadonus robinsi

Common Name

Brazilian Blindfish

Year Described

Nielsen, 2018


Dorsal Fin: 81
Anal Fin: 53
Pectoral Fin: 14
Pelvic Fin: absent
Caudal Fin: 6
Gill Rakers: 12 on first arch
Vertebrae: 77 (37 precaudal)

Body elongate and slender. Head large and broader than body. The mouth is oblique and the lower jaw projects beyond the upper. Teeth present on premaxilla, dentary, and vomer. Fangs small. Eyes are minute and degenerate. The pectoral fin base is extended as a limb-like pedicel. Dorsal fin origin relatively far back. The dorsal and anal fins are continuous with the caudal fin, which is relatively long. Penis short.


Transparent with black eyes.


Only specimen measures 47mm SL.


Abyssal from 4416-4422m.


So far known only from off NE Brazil.


Nielsen, J.G. 2018. Revision of the cosmopolitan deep-sea genus Sciadonus (Teleostei, Bythitidae) with two new species. Cybium, 42(2), 177-187.

Other Notes

Distinguished from Sciadonus pedicellaris by much lower and non-overlapping counts and dorsal fin originating further forward.