He wouldn't anyway. His chakra levels dwarf Naruto's. Kisame kept up with gated Gai, and Sennin Mode Naruto is nowhere near as fast.
Two SM clones solo U_U
Kisame should win as his Daikoudan absorbs chakra, so he won't be the one to turn to stone absorbing senjutsu
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Misconceptions left and right..... Kisame's biggest challenge here is actually the Boss toads. And they are the sole reason he loses this battle. I can't think a way for Kisame to over come GamaBunta and a Sage thus far. Naruto High difficulty.