@Jeg_er_en_mann - I just had it where you have to get them, so you can eat them along the way if you need to.

@CyanWes - Chillfin are static at Hebra Falls with Voltfin and Hearty Salmon. With good RNG, it's longer to go to Zora and purchase the Sizzlefin because you can BLSS into Lake Intenoch and then Windbomb/BLSS out. And Porgy's are static at Lanayru Bay, particularly by the Kass quest. All that said, I'm sure there are still time saves available! I tried routing Zora several times because of all the different fish, but the RNG was not great for the non-purchased fish. I still ended up needing to go elsewhere for some fish and that "elsewhere" included the ones I was trying to get at Zora, so I just dropped Zora.

No amiibo of course. Collect 1 of each type of fish in the game (13 total) as quickly as possible. Timing ends when the confirmation triangle appears for the last fish.

I've already run it and it's a lot of fun. Uses some different strategies from other runs and some of the fish RNG allows for mid-run strategy changes. My current PB: