Crystal is a GEN:2 game while Latios is a GEN:3 pokemon. (so no)
Latias doesn't exist in Pokemon Gold, Silver, or Crystal.
You can't possibly catch latios in Pokemon diamond although you may get it there by using your ruby version if you have one to import it to your diamond. another way is to buy an action replay and cheat
From the sprout tower at night.
No
No, you can only get Latias in Sapphire and Emerald and Latios in Ruby and Emerald.
need to migrate or trade
you catch latios in the dragons den after defeating claire, you get to choose either latias or latios
No.
yes.
How do you catch latios in Pokemon sapphire
In Pokemon Crystal version, you catch it at the Lake of Rage.
You could get a shiny Pokemon for crystal but you need luck to catch one ("_")
You can't possibly catch latios in Pokemon diamond although you may get it there by using your ruby version if you have one to import it to your diamond. another way is to buy an action replay and cheat
no you can not you have to trade for Latios
From the sprout tower at night.
you can't but only the gameshark will do!
No...unless you defeated the Latios...
No