Fishy.py has a database with more than 16,000 fishes, thanks to https://www.fishbase.org/! All of them have unique images and names. When you fish, one is randomly selected from the database. However, in the future [v2], when you have a higher level you have a higher probability of catching more rare and uncommon fish! In terms of technicality, Fishy.py is made with the discord.py API, which is a wrapper for the Discord API. Fishy.py also using sqlite3 for the database.
Have more questions? Feel free to join the support server and ask averwhy! The servers invite can be obtained via
=support, or through this website