A BAP submission of 4 unsexed juveniles (at least a half-inch long).  Males will develop red caudal and anal fins, females don't.  These juveniles have yet to show any dimorphism.

This is sort of an odd-ball within the 20 species of pencilfishes.  It is one of the smallest (barely an inch when adult size), and it comes from a spring of clear water but has not been found further downstream in the softer, more-acidic blackwaters.  It is not commonly bred, but I was fortunate to watch them spawn.  One male chases away the other males and focuses on a particular female that he has chosen.  The two eventually quiver side by side next to vertical vegetation with the female dropping a two or three eggs per time.  This activity must have continued on-and-off over two or three weeks, as I spotted a few newly hatched fry here and there along the bottom corners.  While I did rescue a few and raised a couple apart form the colony, I ended up having more success just leaving the fry in the spawning tank - which had a lot of java moss on the bottom along one side.  Still, the productivity is low.

I usually prefer to use my pro camera, but two of these shots came from my phone during the spawning session.