yes staryu is rare in Sapphire and ruby
Staryu
using a super rod in the lilycove waters
Shellder, Staryu, Lombre, Evee.
You can't catch staryu in firered only in leafgreen or ruby or sapphire or emerald.
No, it can only be found on emerald or ruby and Sapphire
The Pokémon in Sapphire who have the Illuminate ability are Volbeat, Staryu/Starmie and Chinchou/Lanturn.
near where is team aqua/magma hideout. (in lilicone)
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.
You can use either the good rod or super rod the super rod will work more often for finding staryu.
U CANT GET 100 RARE CANDIES ON POKEMON SAPPHIRE. (-_-)
Tropius is not rare.
you cannot clone rare candies in sapphire. you can use Action replay to get more however