We eat lots of fish but I won't buy farmed fish of any kind. A couple of weeks ago we had black bream from our local fishmonger. Several times in the spring we had dabs. All lovely. Anything I've never tried before gets fried in butter, as with sockeye salmon fillets, which never fails. A very good fish for the barbie is John Dory. I get the fishmonger to render the beasts into two skin-on fillets which I grill with the two halves put back together. I do like to taste the actual fish so I never overdo the marinade/baste. Maybe a bit of olive oil and a squeeze of a lemon and a whiff of garlic. Only a whiff. Maybe a sprinkling of fresh thyme leaves. I season it just before cooking. Delicate fish on the barbie can go on one of those perforated alumin(i)um trays. I think the best way to cook a thick piece of fillet, something like hake, cod, haddock or pollack, skin on, is to open-bake it, well basted, skin side down, on your oven tray just after you've done your oven chips, which you keep warm after decanting on to another tray. Getting the timing right is always fun, but better slightly underdone than overdone. Skinless and boneless fillets can go in the oven wrapped in foil with some butter and salt, or poached on top in milk. The latter is very nice with mashed potato, green beans and parsley sauce, which I make using Delia's all-in-one method. Easy enough.