Its been a while since this has been discussed.
Much of fish biology is still a mystery - like what do they see , colors or not ; how does their brain work , - learn , condition , genetic response etc ; what makes them tick - do what they do and more.
We just don't know. So here is one we can take a poll on - do fish reason (have the ability for abstract thought)? What say you ?
Fish can solve problems involving survival. They learn from experience, too. So in that sense they are intelligent, as are a great many animals. Heck, even brainless bacteria self-mutate to deal with environmental stressors.
But abstract thought is another thing.
