Only in the safari zone.
in blue rescue team you are a pokemon, so you cant catch pokemon, you are friends with them.
There isn't one.
Try to catch it with a masterball. that's what i did.
Seriously? You can't catch trainers.
You cannot catch one. You can only choose it as a starter Pokemon in Pokemon Red and Blue.
Catch 'em all!
the blue one
You can catch it at Embedded Tower if you have a Blue Orb.
Ekans cannot be caught in Pokemon Blue version. You need to trade one from Pokemon Red. Similarly, Sandshrew is exclusive to Pokemon Blue.
That is a fairy tale
catch a Missingno
In victory road