Use the frog lure. Be wary; the timing needs to be much more exact, and you need to wait a split second before you press the button to catch it. Practice using the lure on other fish to get the hang of the timing.
Go to the spring in lake hylia and go a little to the right and go to the stick that's connected to the ceiling and cast your rod. you should find the loach there.
iv'e beat and gotten everything in that game MILLIONS of times, but i havn't played it in a while so i need to know what exacly the loach is. as in, is it a fish, or a lure? i HAVE caught every fish so if you need to know, I'll be more than happy to tell you.
It's a hylian loach.
winter
If you catch the biggest fish as young link, you'll get a piece of heart. If you catch the next biggest fish as an adult, you get the golden scale, which lets you dive 9 units (meters?). If you catch the legendary hylian loach, which looks like an eel, as adult link, you get 50 rupees.
Keith Loach was born in 1975.
Jack Loach was born in 1942.
Stone Loach was created in 1758.
Barred loach was created in 1846.
Horseface loach was created in 1854.
Spined loach was created in 1758.
The cast of Ken Loach in Nicaragua - 1996 includes: Ken Loach