Thick-lipped guarami is a species of gourami. The male turns darker at breeding time. When breeding, the edges of the male's dorsal fin and anal fin become bordered by golden-orange. A way to tell the gender of the fish is to look at the color and length of the fins. Males are chocolate-brown and the ventral fins of the females are more rounded at the top and rounder behind the pectoral fins. The species scientific name is Colisa labiosa.
All About Tropical Fish Fourth Edition Page 358