Hemigrammus ulreyi

Hemigrammus ulreyi, commonly known as Ulrey's tetra, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. This species is named in honor of the biologist Albert B. Ulrey. It was originally named Tetragonopterus ulreyi in 1895. This species is found in the basins of the Paraguay River and the middle Paraná River in Argentina, Brazil and Bolivia.

In the aquarium

This aquarium fish suitable for a community aquarium can reach in length and does well at temperatures of.

The breeding size is. Dr. Herbert R. Axelrod, editor of Tropical Fish Hobbyist Magazine, and Dr. Leonard P. Schultz, retired curator of fishes at the Smithsonian Institution, wrote that the breeding of this species is a problem, since the species is nearly identical to Hyphessobrycon heterorhabdus and is difficult to spawn.