It learns it on level 40.
Gyarados cannot learn the move Hydro Cannon. Hydro Cannon is a move that can only be learned by the Water type Starter Pokemon.
At level 40, Kingdra is suposed to learn Hydro Pump.
Somewhat, bagon does not "learn" hydro pump, however it is on itss egg move list so it can inherit it. and yes gyrados must be a male and must breed with a member of the bagon family, who must be female, in order to have the off spring to know hydro pump. (although i really see no point of having hydro pump on my move list other than showing off, because it doesn't get me any type advantges that i alredy have)
Floatzel cannot learn Hydro Pump in any of the Pokémon games as of Generation V.
Well, it's actually Hydro Pump, but Jellicent can learn it at level 53.
gyrdos learns hydro pump at lv 41! i hope i helped you :)
You have to breed it with a Pokemon that knows hydro pump like a male gyarados or lanturn with a female sharpedo. When the egg hatches I think you will have a carvahna with hydro pump.
Sadly he doesn't. Sorry.
Gyarados should learn Bite once Magikarp evolves at lv 20. Gyarados will then learn Dragon Rage at 25, Leer at 32, Hydro Pump at 41, and Hyper Beam at 52. Gyarados will also learn moves if you teach it TMs and HMs.
Gyarados cannot learn the move Hydro Cannon. Hydro Cannon is a move that can only be learned by the Water type Starter Pokemon.
You have to breed a female bagon with a gyarados that knows the move hydro pump.
As soon as its a Gyrados you can teach it Surf to start it off later it will learn Hydro pump.
Hydro pump thunder Hyper beam
No, Dragonite cannot learn Hydro Pump.
Floatzel cannot learn Hydro Pump.
Quagsire cannot learn Hydro Pump.
Azumarill learn Hydro Pump at level 57.