1 tail Shukaku- Wind and the ability to control sand and have any part of his body detached and reatached. http://www.narutobase.net/manga/Naruto/135/4
2 tail Matatabi- much isnt know, but it can be inferred that its body is a constant flame. If thats true then any close combat would result in high heat burns and such.
3 tail Isobu- much isnt shown besides the fact its faster under water http://www.narutobase.net/manga/Naruto/317/3
4 tail Son- it would apear he (& 8 tails) are the only ones of the bunch with thumbs and power of might. Also Magma & fire/earth style powerful moves to aid him.
5 tail kokuou- Ummm. Speed?:confused
dont know much on this one at all.lol
6 tails Saiken- This one might be one of the most unique ones of the with the acid ability and the gas that can destroy anything it comes in touch with. http://www.narutobase.net/manga/Naruto/568/3
this one is dangerous in its own right.
7 tail Choumei- Not much is known on this one aswell, but it can fly. So i would assume it is fast or can flap its wings at a high velocity.
8 tail Gyuuki- Ink, 8 replaceable tails, Hands for combat/grabbing etc etc.
9 tail Kurama- A shit load of chakra, and nine destructive tails.