
There are two of these young fish that we found and by process of elimination we think they are Zipper Loaches. That is, if the fish we think are Zipper Loaches in that tank really are. That's what they were sold to us as over 12 months ago. The only pairs (or more) of fish in the tank are the trio of Zippers, a pair of Plecos and two different kinds of Tetras.
We were changing the gravel in this tank. The original gravel was a large pebble (maybe 3/8 inch or so) and we never did like it a lot. After we pulled out all the plants and rocks and started scooping the gravel, we spotted the two youngsters. We managed to scoop them up and move them to a small tank we have running for cases like this (well, not exactly like this, we keep finding swordtail fry in the filters from another tank) and the two of them seem to be doing fine in there.
Gotta love this aquarium thing and the surprises that it springs on you!
Rick