Sphaerichthys

Sphaerichthys is a genus of gouramis native to Southeast Asia known as chocolate gourami. These species live mostly in blackwater rivers/swamps with acidic water. They have dark-light brownish hues with the exception being the female of S. vaillanti which can be dark reddish brown with green-dark blue/black stripes. They are shy fish that are hard to find because of their camouflage which when in action makes them look like a dead leaf floating along the river.

==Species== There are currently four recognized species in this genus: Sphaerichthys acrostoma Vierke, 1979 (Giant chocolate gourami) Sphaerichthys osphromenoides Canestrini, 1860 (Chocolate gourami) Sphaerichthys selatanensis Vierke, 1979 (Crossband chocolate gourami) Sphaerichthys vaillanti Pellegrin, 1930 (Valliant's chocolate gourami) S. acrostoma, S. selatanesis, and S. vaillanti are found in Borneo (Kalimantan), while S. osphromenoides is found in Sumatra and Malaysia.