What is "annamia"

Annamia is a small genus of gastromyzontid loaches native to Southeast Asia, with these species, though one of them is of doubtful validity and identity:

• Annamia normani ( Hora, 1931), found in the Mekong basin
• Annamia thuathienensis H. D. Nguyễn & V. H. Nguyễn, 2005, found in Vietnam ( species inquirenda)