03-31-2011, 09:37 PM
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Yes, they are both males.
The behavior is very normal that you are discribing. Guppies are playful, and males often "dance" together in play and also to establish their pecking order when all males are kept. I have 9 of them together, they are funny, active, and adore each others company. The more the merrier for guppies, as this way it can spread out any all male aggression if it happens.
Remember if you plan on adding females that these guys can reproduce quickly and in bulk!! Also, you will want at least 2-3 females per one male, or the stress from the males picking at the female and trying to mate her can and will kill her. And avoid female mollies with male guppies, they can crossbreed. Sexing them is the same as with guppies, they have the longer pointed anal fin verses females who have a shorter rounder anal fin. (Also avoid male mollies with female guppies, they can crossbreed as well, but the size of baby mollies can kill the female guppy before, during, or after birth.)