Three spot gourami
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The three spot gourami, also known as the opaline gourami, blue gourami, and gold gourami, is a species of fish native to southeastern Asia, but also introduced elsewhere. This gourami gets its name f
Trichogster trichopterus 13
Gourami frontal view
Males such as this "opaline" gourami have long dorsal fins
Juvenile three spot gourami from the Philippines
Betta
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Betta is a large genus of small, active, often colorful, freshwater ray-finned fishes, in the gourami family. The best known Betta species is B. splendens, commonly known as the Siamese fighting fish
Three spot gourami
…and generally may bother other fish in the tank. They often show aggression toward species with long, flowing fins such as male guppies, goldfish, and bettas, because they display long tails and bright colors, presenting competition for impressing a female gourami. Female gourami sometimes bother other fish…
Betta albimarginata 060311 8
Betta splendens, the Siamese fighting fish, is often referred to simply as a "betta" in the U.S.
A pair of Betta smaragdina
Male Betta tussyae