No but I have a trick to getting them
1 make sure you have a wobbuffet lvl30-35 in the first slot of your team ( make sure he knows mirror coat.
2 Go to the route south of mauville and go In the trick house and come back out.
3 Repeat 2 until Latios gets in that area (use your pokedex to check)
4 When he gets to you use any repel and look for him
5When you get in battle it wont run so use mirror coat and Latios should get hurt bad.
6 use some other moves till he is weak and use sleep powder.
7 Flunk a couble ultraballs till you cath it.
And there you go.