FISH. Brain Food or Myth?

The thing about fish, if you have ever tried to engage with one, is just how difficult it is to get with what they're saying. 'Forget it!', you think, all too quickly, possibly missing some piece of knowledge you could only get from a fish. Eating them is a whole other issue. Does anyone know how you do it properly? What happens to the head? Howard has a 'fish dumpling' recipe in which there are hardly any fish at all!!
There are those who believe that eating fish increases their brain power. To this i have an unequivocal response - rubbish!! Our friend Ced has fish and chips every Friday and gets stupider by the minute, showing not even a temporary surge on a Saturday morning. Others believe there to be a mythical fish with the head of a man, swimming around somewhere in the oceans, presumably with a modified nose/mouth etc arrangement so he can breathe. (Ced and Howard are both of this opinion whereas i think it sounds unlikely.)
What do you think of fish?