When was the last time you ate seafood?

Yesterday

Monday. Crab alfredo from Red Lobster.

I ate canned anchovies a few weeks ago. 

(Your question does not differentiate between fresh and canned seafood.) 

Saturday evening.  Smoked salmon with pico de gallo. 

It's been a long time. I think seafood is overrated.

A while. My daughter's fiance is a commercial fisherman, it's kinda ruined me for what you can pick up at the market. What he brings home is better, but he's at sea for three out of four months. Due back again next week.
I did point out to my daughter that this will make her a "sea widow". She countered that it meant she was less likely to get sick and tired of him - and that it turned their relationship into a series of honeymoons, which was far too much information.