Fish Species Starting with R
Browse all aquarium fish species with scientific 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. Notable among them 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.
3 species found
Tigerfish
Rhamphochromis longiceps
This is one of Lake Malawi's sleek, open-water predator haps - long, torpedo-shaped, and built to chase down smaller fish. Adults can get a cool greenish metallic sheen on the back and mature males may look more bluish-grey, plus the females are classic mouthbrooders.
White-cheeked goby
Rhinogobius duospilus
This is one of those little stream gobies that acts like it's glued to the rocks-its pelvic fins form a suction-cup so it can hang out in flow. Males can color up really nicely and they'll claim a favorite cave/stone like a tiny bouncer, but in a well-structured tank they're super fun to watch cruise the bottom and perch.
Chocolate-colored catfish
Rineloricaria lanceolata
This is a slim little whiptail (a Loricariid) that spends most of its time gliding over sand and leaves, picking at biofilm like a tiny vacuum cleaner. Give it driftwood, caves, and calm tankmates and it turns into a super chill, sneaky-bottom-dweller with that awesome long whip tail and high dorsal fin.