route 118
Just like the regular ones - in the Febass spot you just have to get lucky.
quiet cave on pokewalker
use a good rod for a febass. and they are mostly in sapphire
You can catch him on Mt. Coronet (upper) B1F with the old rod.
you cant.
mt coronet trust me
Do you remember where the fog area in Mt Coronet is? If you fish there with the super rod you should find Feebas.
in route 119
You cannot get feebas in-game, it has to be traded from either ruby, sapphire or emerald. You can get feebas in R\S\E in route 119 and just like D\P\Pt there are only 6 fishing spots.
You can't catch Milotic. Instead you have to catch a Febass and max out it's beauty and level it up. Febass can be caught either at the Quiet Cave Pokewalker route or in a lake somewhere but I forget.
It is exclusive to Red Rescue Team, but if you get a mission that has Febass as the clieant he will apear in Waterfall Pond.
you cant find him in Pokemon ruby instead you find may.