This will be decided at some point in future. Currently, we only use ~5%-10% of our bio-load capacity. So we can and need to get lots more so visitors have a trip-and-money-worth variety to look at, learn about, ask questions, etc.
It's pretty much a one-man or one and a half man operation for now. We plan to start with $3-$5 admission. The more fish and exhibits we have, the more we can charge, in theory.
Currently we could re-home some (unexciting) large common plecos and some low quality koi and some goldfish but they are not readily accessible atm (they are in a ~50,000 gal outside pond). Once we finish the exhibit koi pond, then I will pump the outside pond down and get the quality koi plus all of the above out and into the exhibit koi pond, where they can be caught if needed.
There will eventually be a list of fish available for adoption, once we get our website running, kind of like Jonathan Strazinsky had when he ran his Monster Fish Rescue in Orwell, OH (near Cleveland), if anyone's familiar with it. Meanwhile, we do look for connections. We already have the beginnings of a solid network of reliable new homes for donated / rescued fish, mostly commercial. On top of this, anyone who expresses a desire to adopt a fish and proves his/her knowledge and housing capacity, should be able to do so.