Apparently cuddling with fish is a "thing". Who knew? This fish certainly seems to enjoy its owner's hand and plays by darting away and coming back for more. Never saw this before, and have never owned fish...but I guess their therapeutic value goes beyond just watching them swim around! The first video appears to be in a lake/pond setting...the second is in a tank.
I remember my dentist had a HUGE fish tank that took up almost the entire wall in his waiting room. There was a power outage over a weekend, which did in all of the fish...yikes! He had to replace the whole thing (live coral as well). He then got a power backup for the tank for future emergencies. But I digress...