Don't see he correlation, Kisame is not as dumb as Ay plus the starting distance is much larger
Kisame is much more knowledgable about leaf ninjas than that fodder was seeing how he
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who is much less famous than the yellow flash. Pretty sure Kisame also keeps a bingo book much like other mist ninjas do. Kisame has also literally been to the hidden leaf village and seen Minato's face carved into a mountain. There's no way he doesn't recognize his opponent.
Why would kisame have to know that? The only way minato would close that distance is through throwing a marked kunai. Kisame is known to turn the location in his favor at the beginning of all his battles. Even just a
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is enough to make all of Minato's kunai assaults useless
Literally the name "the yellow flash" indicates minato is an opponent that uses speed, an advantage Kisame will understand and eliminate once he turns the environment in his favor. Plus common sense dictates Kisame knows at least the basic concept behind FTG (in that it involves teleportation) given Minato's lifetime accomplishments in battle and fame throughout the shinobi world.