Imperador, Beryx decadactylus Cuvier 1829

Other Names: Alfonsino, Longfinned Beryx, Long-finned Beryx, Red Bream

An Imperador, Beryx decadactylus, on the continental slope off North Carolina, USA. Source: Dr. Ken Sulak / National Oceanic & Atmospheric Administration. License: Public Domain

A pinkish-red alfonsino shading to silvery-pink below, with pinkish-red fins, and a reddish eye.

Cite this page as:
Martin F. Gomon & Dianne J. Bray, Beryx decadactylus in Fishes of Australia, accessed 19 Sep 2020,

Imperador, Beryx decadactylus Cuvier 1829

More Info


Body deep, compressed body, eye very large, mouth large, oblique; scales small, ctenoid. The species has very large eyes, a large oblique mouth and small ctenoid scales.
Dorsal fin single, short-based; anal fin long-based, originating below middle of the dorsal fin; caudal fin deeply forked.

Species Citation

Beryx decadactylus Cuvier, 1829, Histoire Naturelle des Poissons: 222. Type locality: Madeira.


Martin F. Gomon & Dianne J. Bray

Imperador, Beryx decadactylus Cuvier 1829


Cuvier, G.L. in Cuvier, G.L. & Valenciennes, A. 1829. Histoire Naturelle des Poissons. Paris : Levrault Vol. 3 500 pp. pls 41-71.

Friess, C. & G.R. Sedberry. 2011. Age, growth, and spawning season of red bream (Beryx decadactylus) off the southeastern United States. Fish. Bull. 109: 20-33.

Kuiter, R.H. 1994. Family Berycidae. pp. 392-398 figs 352-357 in Gomon, M.F., Glover, C.J.M. & Kuiter, R.H (eds). The Fishes of Australia's South Coast. Adelaide : State Printer 992 pp. 810 figs.

Paxton, J.R. 1999. Family Berycidae. pp. 2218-2224 in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 4 2069-2790pp.

Roberts, C.D. & Gomon, M.F. 2008. Family Berycidae. pp. 415-419 in Gomon. M.F., Bray, D.J. & Kuiter, R.H (eds). Fishes of Australia's Southern Coast. Sydney : Reed New Holland 928 pp.

Yearsley, G.K., Last, P.R. & Ward, R.D. (eds) 1999. Australian Seafood Handbook. Hobart : CSIRO Marine Research 460 pp.

Quick Facts

CAAB Code:37258001

Depth:180-1000 m

Fishing:Commercial species

Habitat:Continental slope, near bottom

Max Size:45cm SL

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Species Maps

CAAB distribution map