Gray silver plated with 14 to 16 more or less visible longitudinal lines. Triangular spot noirâtre of the nape of the neck to the intersection of the pectoral ailerons very  characteristic and with black ring on the very visible flow pedúnculo. Commun run in docks, ports, piers. Like to go in many groups in its youthful state by beaches and handles. It can reach considerable sizes while arriving at rôder the 30 centimetres length in its adult state. One underlines two subspecies clearly differentiated by their tonality, known clearest by will mojarra of the sand and most brownish by the stone adjective.

Its fishing, by means of simple material (especially the paternóster two or of more hooks) traditional in ports, quays and is thrown stones. Very active during the day they like to go in untiring research small towards and of gray shrimps, without obviously scorning our splendid starters prepared for species larger than those which will give good account, by leaving our really brilliant hooks. Weaker than night (unless the state of a sea in calms preferably with the full moon they invite them to continue to do of them his), they can manage to constitute the nightmare of the fisherman who patientement takes again once after other his hooks without starter. In its adult state it can manage to reach considerable dimensions by having a really exquisite savour in the table.