Veekun Pokédex says that Golduck learns TM 15 Hyper beam on all generations except first (RBY). Some other Pokédex says, like serebii and Azure Heights say that it learns TM 15 on RBY.

Well, serebii has no trust on this because there are a lot of Pokémon that say they can learn Hyper Beam on first generation which is not true, but I couldn't test it myself.

Could somebody test it, please?

Thanks in advance!

(Edit:pokemondungeon also says it learns TM15 on RBY)

Maybe we're the only ones with the correct information that was tested! Or someone with RBY could look for that. >_>

I'll test once I get a golduck on my Yellow version.