Selectivity experiments, testing various rigid sorting grids in the cod-end section of a commercial monkfish (Lophius vomerinus) and sole (Austroglossus microlepis) trawl to size select and release juvenile monkfish, were carried out off Namibia in February 2000. The experiment involved the testing of Sort-V rigid sorting grids with circular openings of 115, 120 and 130 mm diameter (∅) and an EX-it sorting grid with circular openings of 130 mm ∅. Results obtained from testing the Sort-V single grid with circular openings of 115 mm ∅ showed the greatest potential in terms of the length at 50% retention, the selection range, the percent monkfish ≤30 cm released and the percent monkfish >30 cm retained. Further work is, however, needed and considerations, including the survival of monkfish released by a rigid sorting grid, for future monkfish selectivity experiments are provided. Keywords: Monkfish (Lophius vomerinus), Size selection, Grid selectivity, Namibia.