name: opaline gourami (trichopodus trichopterus) max size: up to 6 inches water parameters: pH 6.0-7.5, temperature 74-82°F, soft to moderately hard water diet: omnivorous – eats flakes, pellets, and live or frozen foods such as bloodworms, brine shrimp, and daphnia; will also graze on algae temperament: semi-aggressive; generally peaceful but males can be territorial, especially toward other gouramis tank setup: planted aquarium with open swimming areas and floating plants; gentle to moderate filtration and stable water conditions compatibility: suitable with medium-sized peaceful fish like barbs, tetras, rainbowfish, and corydoras; avoid fin nippers and very aggressive species behavior: slow, graceful swimmer that often patrols the mid to upper levels of the tank; males may build bubble nests fun fact: opaline gouramis are a color morph of the three-spot gourami, and the two dark spots on their body plus the eye form the “three spots” referenced in their common name