Here is the full list of all 18 The Fisherman - there are Fishing Planet achievements.
Catch 100 Unique fish
Catch 250 Pike
Catch 250 Bass
Complete the Tutorial
Catch 250 Trout
Catch 250 Panfish
Catch 250 Catfish
Catch 250 Zander
Catch 250 Salmon
Catch 250 Carp
Catch 250 Crappie
Participate in fishing competitions
Register in fishing tournaments
Won in a qualifying tournament
Get to the final round of a tournament
Be in a competition’s Top-3 winners 5 times in a row
Catch 1000 Trophy fish
Caught each of existing Young, Common, Trophy and Unique regular fish in the game