Hook for selective fishing by sizes characterized in that a first elongated element is properly disposed between the neck and the tip of said hook, the length of said first elongated element is less than the hook gap; an end of said first elongated element is joined to the upper area of the neck by articulated joining means apt for the rotation of said elongated element with respect to an axis perpendicular to the axis of the neck of said hook, said articulated joining means comprise one or more springs; between the eye of the hook and the point of attachment of the first elongated element a hollow drive element of the first elongated element is conveniently disposed whose inner diameter is greater than the outer diameter of a hypothetical cylinder which in its interior comprised the neck of the hook and the first elongate element arranged parallel to each other and contiguous; at the other end of the first elongate element a second elongate elastic element is conveniently arranged whose length is the length of the gap not covered by said first elongate element. (Machine-translation by Google Translate, not legally binding)1. Anzuelo para pesca selectiva por tamaños caracterizado porque se dispone adecuadamente un primer elemento alargado entre el cuello y la punta de dicho anzuelo, la longitud de dicho primer elemento alargado es menor que la brecha del anzuelo; un extremo de dicho primer elemento alargado está unido a la zona superior del cuello mediante medios de unión articulados aptos para el giro de dicho elemento alargado respecto a un eje perpendicular al eje del cuello de dicho anzuelo, dichos medios de unión articulados comprenden uno o más resortes; entre el ojo del anzuelo y el punto de unión del primer elemento alargado se dispone convenientemente un elemento de accionamiento hueco del primer elemento alargado cuyo diámetro interior es mayor que el diámetro exterior de un cilindro hipotético que en su interior comprendiese el cuello del anzuelo y el pri