Hello :) My idea is, while you have a fish in the card, you can name/rename it. Maybe even have a search tab where you can just type the name and find the specific fish you're looking for. Adds some character and is easier to keep track of them!
Would be very nice to have! The problem is, the fish codes aren't big enough to store names, so it's a technical challenge. If someone comes up with a solution, mods and contributions are appreciated on GitHub: https://github.com/jobtalle/koi