The three spot gourami gets its vernacular name from the two spots along each side of its body in line together with the eye being considered as the third spot. It is also known as "hairfin gourami" (from its specific name trichopterus) or "two-spot gourami" (in Malaysia). Variety names include "opal" or "opaline gourami" (or "Cosby gourami") for varieties with a marbled pattern, "blue gourami" for the blue morph