Fish Trap Object code only includes Trout and Salmon as catch options.

[FyreAus]

Might be intended but as you can see only Trout and Salmon are in the list. No Tuna. If it is intended perhaps a Tooltip to explain Tuna are too smart to be caught by baitless traps?

[cjAnteka]

Super late, but the original thinking was that tuna were too large/strong for the wooden fish trap. I've changed description.