they cant, only mudkip can learn hydro pump
No.
To my knowledge Ludicolo does not learn Hydropump, however, Lombre learns hydropump at level 49.
level 42
No, Palkia dos'nt learn Hydropump. He cant learn that attack.
i think its 46
I pretty sure it is level 53.
Swampert does not learn Hydro Pump.
The only way for Swampert to learn hydro pump is to let Mudkip learn it at level 42, sorry.
no
Blastoise learns Hydro Pump at level 53.
it can by tm
Nope, I trained mine to level 100 so I should know