39. A person shall not use a single wall set net or trammel net—
(a)for the taking of pollen in Lough Neagh or Upper and Lower Lough Erne unless it has a mesh of 27 millimetres or more from knot to knot or 108 millimetres to be measured all round each mesh;
(b)for the taking of perch in Lough Neagh unless it has a mesh of 27 millimetres or more from knot to knot or 108 millimetres to be measured all round each mesh;
(c)for the taking of pike or bream in Lough Neagh unless it has a mesh of 51 millimetres or more from knot to knot or 204 millimetres to be measured all round each mesh; or
(d)for the taking of trout in Lough Neagh unless it has a mesh of 57 millimetres or more from knot to knot or 228 millimetres to be measured all round each mesh.