I recently purchased a pair of Bolivian Rams from my LFS. I tried to sex them as best as I could and it appeared to be a male and female since the male (I presume) has taller 1st and 2nd extensions of the dorsal fin compared to the other which I believe to be a female since the dorsal appears to be the same height throughout and smaller. I have them in a well planted 20g long with a pair of Gold Rams and 8 neon tetras. They love their new home, are very active, and get along with the other tank mates just fine. I was observing their behavior the other day and noticed them locking jaws at some moments. Is this a sign of courting behavior? They have not really laid claim to any part of the tank yet, and neither have the Gold Rams as I introduced both pairs at the same time. The Gold Rams do chase each around and do appear to be a true pair from my judgement. Any insight onto the Bolivian Rams' behavior would be appreciated. Thanks.