On inland waters the river and brooks usually open up the 15th April. Lakes are typically the 1st May. If it's tidal I believe you can fish it year round. I don't see the NB 2022 Fishing Guide online yet, but here's the 2021: https://www2.gnb.ca/content/dam/gnb/Departments/nr-rn/pdf/en/Fish/Fish.pdfWhen can we start fishing open water?