Parambassis siamensis is a species of freshwater ray-finned fish in the Asiatic glassfish family Ambassidae.

[2] It is native to the mainland Southeast Asia in Thailand, Cambodia, Vietnam, and Laos; records from Singapore and Java (Indonesia) probably are introductions.

Its range includes the Mekong, Mae Klong, and Chao Phraya basins.

[1] It grows to 7.5 cm (3.0 in) standard length, although typical length is about 4 cm (1.6 in).

This Mugiliformes-related article is a stub.