Dev, could you add achievements on Steam? Please!

I've finished the game and selected all of the choices, but I still have the top middle image on page 2 locked. My only guess is that there's a special name and/or fish that unlocks it? I tried Olive and Lemon Shark but that didn't work.

Hello! I'm contacting you on Steam because I couldn't send you a PM in Twitter :-(. I saw the game in the 'upcoming' section on Steam and I loved it, so I wanted to ask you if you are interested in me doing a translation of it into Spanish. I'm a translator specialized in video game localization and also a linguist, it could be a fan-translation (meaning that you don't have to pay me) I will do it for the experience -and for the lovely fishes-. My twitter is @LocCataKings if you want to contact me there! ...