In the sinnoh pokedex where and how can I catch the Pokemon numbered 45..

#45 burmy - smear honey onto the yellow trees. Wait. Then when it shakes, check it. It might be a burmy. (theyre rare, and they have three different forms)
#46 wormaadam - evolve a female burmy at lvl 20
#47 mothim - evolve a male burmy at lvl 20
#65 drifloon - every day, go out the front of the valley windworks (the one with the rotating propellors) and on one of those days there should be something floating in the air. Fight it and catch it, it's drifloon, and I think it's a one off)
#80 barboach - it's uncommon but you can fish almost anywhere in the game. It's a ground type and a water type. You could trade it from ruby, sapphire or emerald, too.
#134 finneon - fish in the water with a good rod near Canalave City, Fuego Ironworks, Iron Mountain, Valley Windworks and in the water on routes 205, 218, 219, 220 & 221,
#135 lumineon - evolve finneon or fish with a super rod anywhere you can find a finneon.
#136 mantyke - surf near sunyshore city and aroud route 223. Also if you breed a mantine (female) holding a wave incense it will have an egg with a baby mantyke.

Please go to www.serebii.net.

Click on Sinnoh Pokedex and it will give you all the information you need.

The site is also famouse for having everything Pokemon so check it out in it's entirety.

Courtesy of Serebii.

Go to serebii.net for all your Pokemon information.

Serebii.net! Yeah! Also, Join The Pok�lites (or The Pokelites) (alt+130=�)

-Shadow Cresselia