How do you get speartuna in MHFU?

Answer 1

First, you must be at least LV3 or higher to get speartuna. Go to the Gathering quest of Forest & Hills, then check the fishing spot right beside your camp spot (where you start when you initiate a Low Rank Quest) and there should be a giant fish there, biggest fish. If not, go to area 1 then come back. Keep doing this until you see the speartuna. For a higher chance of getting the speartuna, check high rank quests.