Cichlids are certainly interactive, but I'm not sure they're 'friendly'; certainly not always; our oscar recognises certain people (he liked my son, until the son bleached his hair, now the fish goes mad when he sees him
) but basically hates everything and everyone; especially my mum's dogs and the water changing stuff.
On the other hand, my old angel seemed to love me, although it was probably just begging for food really!
Bettas ae really friendly, that's true and goldfish; especially fancies. Some of my favourite fishy friends ever have been fancy goldfish, although I don't keep them now (too many health problems, I find).