Mag side guide to profession:
level 3: not fisherman
level 4: not fisherman
level 5: not fisherman
level 6: not fisherman
level 7: you can start being fisherman, though why would you change
Every profession can potentially make same amount of profit per hour from raw resources if you can find a buyer. There is no single best profession as they all have their own unique aspects.
human side.. lvl 3 help with collected plants for red mercenary badges
in lvl 4 same with inks.. fish are fished faster than collecting plants.
in lvl 5 and lvl 6 herbo is good because of pots