1. You can see this bar as the HP of the fish, when his HP is gone you have caught the fish
2. You can see this bar as your HP(the Durability of your gear).
3. This red area is the part where you come in with the dobber if you press your mouse button too long, going into this area will break your rod because your pulling the fish too hard, you can see your rod is breaking if your HP(2.) goes down.
4a. This blue area is where your dobber has to stay in, when your in here the HP of fish(1.) will go down. The more damage your gear has the faster the HP(1.) of the fish will go down.
4b. This is a dobber that will move to the left towards the red area(3.) when you hold your mouse button, when you release your mouse button the dobber will move towards the orange area(5.). By pressing the mousebutton when needed you will be able to keep the dobber in the blue area(4a.) and you will catch the fish.
5. This orange area is the part where you come in when your fish is trying to escape, this means your not pressing/holding your mouse button often anough. When moving into this area your HP(2.) will drain and the HP(1.) of your fish will heal. Altough going into this part hurts less than going into the red part, the fish will regain HP wich can be bad if your fishing powerfull fish.