<; p >; a method, a device and a fish culture to control the concentration of Organisms living in water, in order to facilitate the management of the agencies.Such as sorting and counting.The Apparatus comprises a First feed channel for Flow of living organisms in a Second Fluid feed channel for FLUID FLOW.A Chamber containing a Lever to regulate the flow from the first and Second Channel Power through the Chamber, an outlet (15) and a computer.Where a sensor (9) is located in the First Food Channel, to detect the density of living organism in the fluid and where the computer continuously and automatically.Regulates the flow ratio of the first and second feeding Channel through the camera and output by the lever in response to the density of Alive organism in the flow.Determined by the sensor. <; / p >; <; p >; <; / p >; u00a0APARATO PARA CONTROLAR DE FORMA AUTOMÁTICA Y CONTINUA LA CONCENTRACIÓN DE UN FLUJO DE ORGANISMO VIVO EN UN FLUIDO QUE COMPRENDE UN PRIMER Y SEGUNDO CANAL DE ALIMENTACIÓN PARA UN FLUJO DE ORGANISMO VIVO Y UN FLUJO DE FLUIDO RESPECTIVAMENTE, UNA CÁMARA QUE CONSTA DE UNA PALANCA, UNA SALIDA, UN SENSOR EN DICHO PRIMER CANAL DE ALIMENTACIÓN Y UN COMPUTADOR, MÉTODO.