Once I was at PetSafari and spotted 2 unusual fishes in the display tank opposite from Sam Yick. These two fishes, males I guess, are tiny and I would not have noticed them if they didn't zip out of the foliage and started dog-fighting like a pair of WWII fighters. The reason I say dog-fighting is because their dorsal and anal fins when extended look like wings of WWII fighters and they were circling like crazy. I think the fins were white.

Now... anybody know what fish they are? Thanks.