Fishao Mise
From now on, you will need a strong fishing line in addition to your rod to catch the (big) fish. Both influence the difficulty of catching fish. You can upgrade your fishing line to a higher level, so you can catch larger fish with more ease. Also, new line colors will become available while upgrading!
From now on every player in FISHAO will have their own money tree! It’s located in your backyard and from time to time, you can collect fishbucks and coins from it! By upgrading it, even more money will grow on your tree!
Fishao is a fun and deep, real-time fishing game that lets you dive into the minutae of hooking fish on your line. Pick the right rod, bait and spot to catch some of those water-breathing scaly guys. It won't always be easy, either.
Login to Fishao and check it out! =)
Here is a more detailed explanation of fishing lines from Fishao on facebook:

FISHING LINE EXPLANATION
Some players are a little bit confused by the functionality of the fishing line, because of that we will give some information about it:
From now on every player will have a fishing line too. Paying players (who sponsored FISHAO with real money) received a fishing line in some level that is comparable with the biggest fish they’ve ever caught in the game.
So, how does it work?
The minigame is changed now, and will work both on the fishing line and the power of your rod. (Average power of both)
Fishing line: till 200 cm
Bamboo rod: till 40 cm
Fashionisers
Now you will be able to catch (on average, maybe even bigger depending on your skills) fish till 120 cm! (200 + 40 = 240 / 2 = 120)