Loaches are ray-finned fishes of the suborder Cobitoidei. They are freshwater, benthic fish found in rivers and creeks throughout Eurasia and northern Africa.

Gouramis or gouramies are air breathers that belong to a group of freshwater anabantiform fish that comprise the family Osphronemidae.

Parosphromenus is a genus of small labyrinth fishes highly specialized peat swamp inhabitants native to southeast Asia.

Symphysodon colloquially known as discus or discus fish is a genus of cichlids originate in the mixed tropical waters of the Brazilian Amazon River of South America.

Pterophyllum scalare, most commonly referred to as angelfish or freshwater angelfish, is the most common species of angelfish frequently found in the aquarium trade.

Killifish are small colorful egg-laying fish found in warm climates worldwide. Killifish species are known for their vibrant colors and unique breeding habits.

Corydoras are quite placid and well suited to tropical freshwater community aquariums, as they get along well with most other species and are not aggressive.