Tuna – le thon
(Pronounced tohn [rhymes with john])
To remember that Tuna is pronounced tohn (thon) in French, use the following mnemonic:
The tuna cooked on the barbecue using large tongs (thon).

Thon is masculine, so it's le thon. Imagine the early learner emerging from a tin opened by a tuna fish.

Examples of thon (tuna) in a sentence
J'ai acheté une boîte de thon au supermarché.
(I bought a can of tuna at the supermarket.)
Cette semaine : tarte au thon et aux légumes du soleil.
(This week: tuna and sun-drenched vegetable tart.)
Mon chat aime manger du thon.
(My cat likes to eat tuna.)