You can't catch it but you can see it. A trainer south of victory road has it.
route 218 (good rod)
Route 222 or 224.
You find finneon at the fishing area east of canalave city (in Pokemon platinum)p.s.there are other places, but i caught mine there.
Canalave City use good rod.
Finneon will evolve into Luminneon at level 31.
You have to get a finneon,and evolve it yourself
It is finneon!
you raise it to level 31
it evolves at level 20
Level 30.
Finneon can be found at Sandgem Town,Go to the beach located there and use any rod in the water,Eventually there will be one,I hope i helped you
yes it evolves nto luminnieon