Threespot Gourami Trichopodus trichopterus

Threespot Gourami
Three Spot Gourami
The Threespot (Three Spot, Three-spot) Gourami is native to slow or still, marshy water of Indochina, particularly the Mekong basin, and Indonesia, but it has been introduced to other areas. It migrates to flooded grassland and forest in the wet season. Its natural colour is a blueish grey, as above, and it grows to 15cm. It has only two spots on each flank.
Three Spot Gourami
Threespot Gourami
Three Spot Gourami
In aquaculture, it has been bred in several colours (blue, gold, amethyst, white) and a marbled pattern called Cosby or Opaline. It is difficult to tell the real colour of this captive-bred Cosby variant because of the strong purple aquarium light. If the purple colour cast is removed, the fish appears unnaturally yellow (see below), but without the purple it was pale blue.
Three Spot Gourami
Threespot Gourami
Three Spot Gourami
The Three-spot Gourami is a bubble nester. The male builds a bubble nest for the female to lay eggs, which he then guards aggressively (even from the female).