Keep Product Reviews after product sells

Hello,

My new online store sells one-of-a-kind products (individual clown fish). Once a fish is sold, it is sold out and is removed from the available product listing.

Customer Reviews is supposed to be a huge part of the store, but with the way this is set up, the customer will never have an opportunity to add a review since their product is not on the storefront. They could make a review of a similar product, but once that fish is sold, the review is gone.

Is there a way I can make it so that Customer Reviews are store-based? Any modules or add-ons available to accomplish this? Or maybe I'm not configuring the customer reviews admin settings correctly?

This is a tough one because when I do searches in Google, all I see is Zen Cart Reviews!

Thanks in advance!

I believe that that's what the Testimonial Manager add-on does ...