Q&A for How to Fish in Pokémon Emerald

The good rod can be obtained from the fisherman on the right side of the river on Route 118, it will let you catch Pokémon up to level 30.

You must press “A” as soon as you see “Oh,a bite!” No sooner no later. You will get used to it.

Look at the dot and time it to when it says: "Oh a bite!". Because if you don't time it right, it'll flee.

Don't spam the A button, press it only once. The way the fishing mechanic works in Emerald is this: You toss the rod. There's a waiting period where you get dots in the text box. It says "Oh! A bite!" Press the A button once; if you press it again immediately, you'll get a message that the Pokemon got away. There's another waiting period with dots in the text box. It says again "Oh! A bite!" Repeat stages 4-6 until the battle starts.