Well, I know they are hatchet fish for sure. They have that big flat
hanging belly and the side fins look kinda like wings. And by their
mouths you can tell they are surface feeders. I can post a photo if you
want. They do actually hang out near the surface but I never see them
munch on anything on the surface. This weekend I actually tried putting
them in a separate tank, but they were not interested in either flakes,
dried mosquito larvae, frozen larvae or black worms. So... any other
suggestions?