Blue Gourami are hardy fish and like all labyrinth species they can breath through surface air for water born oxygen thru their gills. The Blue Gourami from AquariumFish.com are pond raised in Florida for larger size and color and handle a wide range of pH and temperature. Also called the Three-Spot Gourami, Blue Gourami are similar to Opaline Gourami but have a bluish hue body with three dark spots on the side of the body. Scientific Name: Trichogaster Trichopterus Origin: Asia Lifespan: 4 years Max Size: 5 inches Food: Flake, Live, Frozen Shipping Size: Medium 1 1/2 inch to 2 inches, large approx. 2 inches to 3 inches