I would want to have the new piece of land/pond already identified and locked down before I sold my current place.

Then I'd have to get my fish guy in with his truck and get serious about catching a heck of a lot of my better fish out of the current pond for transport to their new home.

I wouldn't fish my existing pond dry so as to keep it attractive to another person who wants a great fishing pond.

You have to be able to wait for a buyer who values your pond, not just the land (unless they are going to develop your land).

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."