(20) Opaline gourami

The "Opaline" is a captive-bred color morph of the three-spot gourami, Trichogaster trichopterus. Known for its striking blue or opaline color, this hardy freshwater fish is popular in community aquariums but can be territorial, especially males. Proper tank mates include other robust fish, while it's best to avoid aggressive tank mates, long-finned fish, and other gourami species