Method of unloading two different, separate populations of fish, and methods and fishing transport vessel for sorting mixed populations of fish

摘要

A method for unloading of two different separated populations (p1, p2) of fish in a fish carrier, in which said populations are situated at either end of a bulkhead (6) with a separation grating (60) in a transport tank (0), said grating apertures in said separation grating (60) being restricted to a grating aperture which is less than the individuals in both populations (p1, p2), and the tank being provided with at least one forward inlet (46) for fresh water, and at least one aft outlet (42) for water and fish, comprising the following steps: i) said bulkhead (6) with said separation grating (60) displaces one of the populations (p2) against said outlet (42), so that said population (p2) is forced through said outlet (42); characterized by ii) opening said separation grating (60) and running said bulkhead (6) towards said inlet (46) to a position closer to said inlet (46) than a desired portion, preferably all, of the population (p1); iii) restricting said grating apertures in said separation grating (60) to a grating aperture which is less than the individuals in said population (p1) and running said bulkhead (6) astern, so that said bulkhead (6) with said separation grating (60) displaces said second population (p1) towards said outlet (42) so that said population (p1) is forced through said outlet (42).