Freshwater Aquarium Fish By Shirlie Sharpe Shirlie Sharpe Shirlie Sharpe is an aquatic expert and writer with over three decades of experience keeping and raising ornamental fish. She has consulted with The Minnesota Zoo and the National Aquarium. Shirlie has also authored a book on setting up aquariums. Learn more about The Spruce Pets' Editorial Process Updated on 05/12/19 Credit: EuToch / Getty Images Deciding which fish to have in your freshwater aquarium requires you to explore the choices. Take a look at some of the popular types of fish and learn more about them. 01 of 09 Anabantoidei: Bettas and Gouramis Credit: Daniel Ahlqvist :An interesting subfamily of fish are the Anabantoidei, often referred to as the Labyrinth fish. These species have a special organ that allows them to breathe air directly. The popular fad of keeping a betta in a vase, came about because of this ability. Many of these species are very popular, including: Bettas Gourami Species: Blue/Three Spot Gourami, Chocolate Gourami, Dwarf Gourami, Kissing Gourami, Moonlight Gourami, Pearl Gourami 02 of 09 Cyprinidae - Barbs, Danios, Goldfish Credit: Ash Nicholas Cyprinidae are the largest family of entirely freshwater fish. Often referred to as the carp family, it includes many of the most popular aquarium fish. This family also includes many food fish as well as those favored in recreational fishing. Some of their more popular members include: Barb Species Danio Species Goldfish Minnows: White Cloud Mountain Minnow Rasoboras: Harlequin, Scissortail Sharks: Bala Shark 03 of 09 Catfish Credit: Ash Nicholas Catfish may seem alike, but in truth they are one of the most diverse families of fish. One unusual characteristic of this family is the Weber's apparatus, which connects the hearing and swim bladder organs, providing them with an exceptionally keen sense of hearing. Some popular species in this family include: Cory Species Other Catfish: Bristlenose Catfish, Upside Down Catfish 04 of 09 Charcoids: Hatchets, Pacus, Silver Dollars, Tetras Credit: Brian Gratwicke Spread throughout the world, this family includes a wide variety of species. Many are peaceful schooling, commonly seen in community aquariums. Some members of this family include: Hatchetfish: Common Hatchetfish, Marbled Hatchetfish Other Characoids: ​Black Banded Leporinus, Red Bellied Piranha Pacus and Silver Dollars: Pacu, Red Hook, Silver Dollar Tetras: Black Neon Tetra, Black Phantom Tetra, Black Widow Tetra, Bleeding Heart Tetra, Blind Cave Fish, Buenos Aires Tetra, Cardinal Tetra, Emperor Tetra, Glowlight Tetra, Head and Tail Light Tetra, Neon Tetra, Red Eye Tetra, Rummy Nose Tetra, Serpae Tetra Continue to 5 of 9 below 05 of 09 Cichlids Credit: Steven Viemeister Cichlids are an extremely popular freshwater family ​and include a wide variety of species, from elegant angelfish to large and boisterous Oscars Some common members of this family include. Angelfish: Believe it or not, there is only one primary species of angelfish sold in the aquarium trade. Blood Parrots: A controversial hybrid, this species is widely available. Convicts: Named for their prison uniform coloration, convicts are one of the most popular South American cichlids. Kribensis: This attractive, and peaceful, member of the Cichlid family hails from Africa. Oscar: This cichlid ranks high on the list of fish with oodles of personality. Texas Cichlid: The northernmost member of the cichlid family in North America. 06 of 09 Livebearing Fish Credit: Getty Images Livebearing fish are colorful peaceful fish that are easy to care for. They fall into a couple of primary groups, including: Guppy Molly: 24-carat Gold Molly, Gold Dust Molly, Sailfin Molly Platy: Mickey Mouse Platy, Tuxedo Platy, Red Wagtail Platy Swordtails: Marigold Swordtail, Marigold Wagtail 07 of 09 Loaches Credit: Getty Images Loaches are lively bottom-dwelling fish that make a great addition to most community aquariums. Some species include: Clown Loach Coolie Loach Horse Face Loach Weather Loach, Yo Yo Loach Zebra Loach 08 of 09 Rainbowfish Credit: Pixabay Native to Australia and New Guinea, Rainbowfish have rapidly become popular worldwide. Their bright colors and dual dorsal fins set them apart from many other freshwater species. Unfortunately, their attractiveness has caused some species to be captured to the point of near extinction in the wild. As a ​result, some species, such as the highly prized Boseman's Rainbow, are largely captive bred. Some of the fish included in this group are: Axelrod's Rainbow, Boesman's Rainbow, Lake Kutubu Rainbow, Lake Wanam Rainbow, Madagascar Rainbow, Neon Rainbow, and the Red Rainbow. Visit the Rainbowfish gallery for a full list. Continue to 9 of 9 below 09 of 09 Plecostomas Leopard Pleco. Credit: h080 Explore more: Fish & Aquariums Freshwater Fish & Aquariums Freshwater Fish Breeds