Fish That Start With R
Browse all aquarium fish species with common names beginning with "R". Each profile includes care requirements, water parameters, tank size recommendations, and compatibility information for freshwater, marine, and brackish species.
Welcome to the species index for the letter 'R', where you will find a unique variety of aquarium fish. One highlight is the White-cheeked goby (Rhinogobius duospilus), a fascinating species known for its adaptability and charm. While this letter features a limited selection, it showcases intriguing options for both community aquariums and specialized habitats.
rattail
Kumba dentoni
A deep-sea rattail from the Bay of Biscay, Kumba dentoni has that classic big head and long whiptail look and even a tiny light organ. It lives on cold, dark slopes around a kilometer down and picks at small invertebrates and fishes. Super cool to read about, but it is not a home-aquarium fish and would need chilled, specialized systems.
rattail
Kuronezumia macronema
A deep-sea rattail from the Philippines and the South China Sea, this fish cruises 600-800 m down where the water is cold and dark. It has that classic whiptail body and even a small light organ, picking off tiny crustaceans or scavenging what it finds. Super neat to learn about, but it is a look-only species for public aquariums, not something to keep at home.