This Seeking Tech guide will show you how to get the Tall Tale trophy and achievement in the Master Collection version of Metal Gear Solid 3: Snake Eater.
This will unlock when you “collect every type of fish.”
You will find all three types near the south entrance of Ponizovje South. There should be plenty of the small, medium and large size fish here. The small ones may be trickier to spot, so make sure you look carefully.
You can check out the video below if you need a visual aide: