The common snook (Centropomus undecimalis) is a species of marine fish in the family Centropomidae of the order Perciformes. The common snook is also known as the sergeant fish or robalo. It was originally assigned to the sciaenid genus Sciaena; Sciaena undecimradiatus and Centropomus undecimradiatus are obsolete synonyms for the species.

Centropomus undecimalis These golden yellow fish have a very distinct black lateral line, sloping forehead, and protruding lower jaw. They are a very popular game fish that prefer near-shore vegetative habitats like river mouths and salt marshes, growing to over 40 inches long at times.

The Snook’s scientific name is Centropomus undecimalis. Some other names for this fish include snoek, robalo, or sergeant fish. These fish are part of the Perciformes order consisting of the ray-finned fish. The family this fish belongs to is Centropomidae.

Centropomus undecimalis (Bloch), popularmente conhecido como robalo, robalão, robalo-bicudo, robalo-flecha, camuri, camurim açu, [ 1] robalo-branco, camorim, robalo-de-galha, robalo-estoque e rolão, é um peixe encontrado dos Estados Unidos até o Sul do Brasil.