| 摘要 |
A fish grader comprising a number of rigid grids 1 connected together with loose connectors 4 by way of connecting slots 3. Each grid has two or more vertically orientated apertures 2 through which fish of a suitable size are able to pass. Each grid is constructed from a plastic type material. The rigidity of the grids ensures the dimensions of the apertures thereby resulting in an accurate size grading of the fish. A number of these grids connected together and suspended within a water column will form a passive fish grader. |
