If someone came in and killed your pet ... Whose pet was it?
koi are more responsive to people than other types of fish ...
Sure! But what about sharks, they're pretty responsive to people? They eat people. I say, turnabout is fair play.
Many of the students at Porter College, where the pond for this koi was, considered it to be a pet of sorts. They walked by the pond daily and the fish was quite evident. Some were proud of it while others compared it to some of the faculty.