I definitely talk to mine as well.
Most of the comments here I have done. Like telling male pearl gourami to stop bullying the female during feeding time, telling them how cute and beautiful they are, how are they doing, and if they behave.
Sometimes when I say 'I have to feed the kids', my little 6-yr old will say, "Mommy, they are not your kids, they are fish".
When I saw by first guppy about to give birth, I was like a mommy, sitting beside the tank, saying "Everything is going to be alright sweetie"!
I might be crazy already.