From what I've heard, certain fish are more prone to have thoughts of 'escape' from a body of water than others.

For instance, Grass Carp are supposedly prone to escaping.

I wouldn't worry too much about the HSB. All you can do is wait and see.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."