Ah, yes, but it’s a learned ability. We have genetic instinct to look for faces. That’s why we see faces in clouds, the moon etc. if we see what appear to be eyes in the edge of a Forrest, we would be Leary of then, but only because we were taught to be. A survival instinct Learned by training or experience. If the fish has never seen another fish, it may react to its features, but it has no basis to be aggressive to it, unless it has features it recognizes as a threat. If the plastic fish shows no aggression, is perfectly still and the tang can’t smell it, it has no basis to become aggressive to that ornament it sees any more than it would attack a power head or new “yellow“ rock in its domain.
Jetson
Jetson