I have just returned from a weeks fishing on Anglesey and mackerel are showing on the Holyhead side of the island though not in great numbers. The best mark is Mackerel Rock.
Beaumaris Pier usually fishes well at night. You can expect whiting and the odd dogfish.
At Menai Bridge cod are being regularly caught with crab as the best bait.
Fishing off the rocks at Benllech is good at the moment with large numbers of dogfish and whiting with the odd small codling.