Texan Clam Shrimp (Eulimnadia texana) is a medium-sized (4-8 mm) freshwater branchiopod that is distributed from southern U.S. south to Venezuela and the Galapagos Islands. In New Mexico they occur in the Rio Grande and Pecos river basins. They inhabit temporary pools, ponds, ditches, small dry lakes, and other temporary aquatic habitats. Their populations are comprised of males and hermaphrodites, which can mate with males or self-fertilize.