I was pretty sure the gold gourami was acting as she was because she didn't know the man but knew me. I don't know if she based it on his looks, his voice, or as mentioned by one of you, the weight difference? I have to agree that I don't give my smaller tetras as much credit for brains as I do the gouramis and other anabantoids and the pleco. That said, my girlfriend has a betta who is not the sharpest tool in the shed, so maybe it is individual based on the fish secondary to breed.
I am not sure how the fish in the 55g and the 10g would react since they are in a bedroom where there is not much traffic, other than us. I do know one of the felines got jealous of them when I was talking to them while feeding and he jumped up on the dresser edge. None of them were scared of him and he was not interested in them, just getting me to give him attention instead of them!
If I sweet talk Sal or any of the fish, which I am prone to do with the betta, Maury, and Paris, the paradisefish, the cats will come running and meowing to get me to pat them instead of mess with the fish. They don't seem to mind when I feed the fish or change water, just if I start talking to the fish.
i think I just hijacked my own thread! B)