Hiya. I'm making achievments for this game on RetroAchievments. During my play, I have been searching for all of these elusive fish. Below I will list all of them and their locations.
All of them are caught using Worm bait.
Also, a note, there are some palces online that say there are 48 fish. There are only 46 fish in the code.
*Blowfish - east side of Torrent
*Goby - west side of Torrent
*Black Sea Bream - Lake 1
*Sea Bass - directly west of the town in Lake 1
*Halfbeak - northeast of town in Stream
*Sand Flounder - southeast Stream, near Rudd and Salmon
I hope someone else can find this useful. Wanted to post it here, because I know this info is near to, or straight up impossible to find online.
Happy fishing!