Fish are friends not food...
I think it is good to ask questions, but important to be aware of where the answers are coming from. Here are two links that look at the issue of can fish feel pain. Some of the articles used above are from pro-fishing web sites and have understandable bias in favour of fishing. The BBC article posted by Poison Ivy is a good one.
http://www.newscientist.com/article.ns?id=dn3673
http://www.firstscience.com/site/edi...s_05092003.asp
This is a quote from the last paragraph of the second link:
"Pain minimisation has got to be the order of the day, not sainthood. Screw aubergines and tomatoes I say! Kill the vegetables! Save the animals! They really ARE feeling pain and KNOWING IT is someway along the path to helping to STOP IT."
Veganism is so much more than the question of whether things can feel pain. It may be important in one sense but then you could argue that sedating animals with an overdose of anaesthetic then makes the animal fit for consumption. This obviously isn't the only element. There is also the consideration of the animal, it's role in it's community, the effect on the remainder of the community, it's role in the environment, the effect of farming these creatures, and of lesser importance to most vegans here, the health elements of consuming animal flesh.
It has been demonstrated adequately that we don't need to eat animals; the question whether anyone would want to becomes irrelevant.
If you are having seafood cravings Mikdez, there are some wonderful vegan seafood recipes that could meet the nutritional desire including kombu soups, rehydrated wakame and toasted nori sheets are a great snack. I made about 2.5 kg of sushi last weekend for a vegan Japanese party and throught the evening I think we ate about 5 different types of seaweed!