Staryu is available in the water east of lilycove city but you need to use the good or super rod to catch it and to evolve it use a water stone on it.
Shellder, Staryu, Lombre, Evee.
Staryu does not evolve by level. You use a water stone to make it evolve.
yes staryu is rare in Sapphire and ruby
For staryu to evolve you have to use a water stone
you need a water stone for staryu to evolve into starmie :)
A Staryu evolves with a water stone.
You evolve Staryu by getting a water stone. No matter how much you train it it won't evolve. You can get a water stone at some Pokemarts but only like one but you find most water stones in caves.
You can evolve Staryu at any level however it learns it's last move at level 52. The best time to evolve Staryu is to decide what moves you want it to have and see if it can learn any of them from leveling. Once the Staryu has the exact moves you want it to have as a Starmie, then is a good time to evolve it.
Staryu can evolve into Starmie at any level, as long it is exposed to a Water Stone.
Staryu only evolves once into Starmie.
Staryu evolves into Starmie when given a Water Stone.
staryu doesn't evovle you have to use a water stone