It is a fish of coastal habits and one is in rocky places and jetties. It displays forms very similar to its pairs of river. With depressed body back-ventral and chins in its inferior jaw. Of great mouth and great prongs in its fins pectoral and dorsal. Yellowish white belly, surpasses the 6 kg of weight. It lives in cloudy waters and you laugh of low salinity. Bottom fishing, with varied conventional equipment of. In the Buenosairean coast it is fished sporadically, coverall the days with wind of the South sector or the sea with swell waves, that is to say, with cloudy waters. In Sea of the Silver, in the zone of the vaciadero good units are obtained.