You have to breed a female bagon with a gyarados that knows the move hydro pump.
There isn't a TM for hydro pump in any of the regions
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.
The best move which Sammurott can learn is subjective. The final move it learns is hydro pump, which is arguably the strongest.
hydro pump, thunder and blizzard.
hydro canon
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)
It can if you breed it with Gyarados Yes it can because its an egg type move which means it can only learn this move from breeding a Pokemon as the same egg type as bagon which is dragon. You only need to breed bagon or one of its evolved forms like shelgon or salamence with a Pokemon whose egg type is dragon and knows the move hydro pump. Of course when passing on moves the likely hood always increases if both Pokemon know the move but that isn't possible in this case. Since Gyrados is a Water 2/Dragon egg type it is possible to produce a bagon with hydro pump. from Satores
Hydro pump
Hydro pump.
No, Salamence can only learn one of these moves, if u want a hydropump, get a male gyrados, kingdra, seedra milotic,,, these pokemon must have a hyropump, and a female salamence if u want a dragon rush get ur self a male garchop which has a dragon rush move and female salamence so the egg will become bagon
hydro pump
You shouldn't bother teach it hydro pump cause it has hydro cannon.
Salamence can only learn Hydro Pump as an egg move in Pokemon Emerald.
Blastoise will learn the move Hydro Pump when it reaches level 60
Hydro Pump I think
Finneon is a water type of Pokémon. It is not possible for it to learn the move hydro pump, nor is it possible to teach it the move through a HM.
Hydro Pump is a move, and it is nothing concrete, that would be somewhere. If it would be TM or HM move, it could be found somewhere in Kanto, but it isn't. Hydro Pump is the most powerful water-type attack in Pokemon red, blue and yellow.