Oriental darter 
(Cổ rắn, Điêng điểng, Anhinga melanogaster)

The Oriental darter (Anhinga melanogaster) is a water bird of tropical South Asia and Southeast Asia.

Suliformes maybe from Old Norse Sula +‎ -iformes for boobies, gannets.
Anhinga is derived from the Tupi ajíŋa (also transcribed áyinga or ayingá), which in local mythology refers to a malevolent demonic forest spirit; it is often translated as "devil bird". The name changed to anhingá or anhangá as it was transferred to the Tupi–Portuguese Língua Geral.
melanogaster, melanogastra, melanogastrus Greek melas black; gaster belly.