Priocharax pygmaeus

Priocharax pygmaeus is a minute species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This fish is found in the Upper Amazon River basin in Colombia. It has also been recorded from the Río Ucayali basin in Peru. The species, which has a skeleton of cartilage, is almost completely transparent.

Size

This species reaches a length of.

Etymology

The fish's name is Latin for "dwarfish".

Biology

Priocharax pygmaeus inhabits rainforest streams that are shaded or partially shaded. The bottom of the streams are clay with a lot of leaf litter, and submerged plants are not present.