
Popular Saltwater Fish Species for your Aquarium
Here are some of the most popular saltwater fish species that are commonly kept in aquariums, each with unique characteristics and care requirements.
A common rule of thumb for how many marine fish you can keep in an aquarium is to allow 1 inch of fish per gallon of water; however, this can vary depending on the specific fish species and their size, with reef tanks generally requiring even more space per fish due to their larger waste output and need for swimming room.
Rock Beauty
Whitetail Pygmy Angelfish
Longnose Hawkfish
Swallowtail Angelfish
Five-lined Cardinalfish
Flame Angelfish
Coral Beauty Angelfish
African Flameback Angelfish
Ochre-striped Cardinalfish
Queen Angelfish
Rusty Angelfish
Flame Hawkfish
Lamarck’s Angelfish
Black Velvet Angelfish
Herald’s Angelfish
Bicolor Angelfish
Marine Betta
Watanabe’s Angelfish
Koran Angelfish
Overview Native to the Indo-Pacific region, commonly found around coral reefs and lagoon environments. Known for its vibrant blue-green body with distinctive semicircular patterns and intricate blue markings on the fins. Juveniles have bold blue, black, and white...
Helfrich’s Firefish
Swallowtail Hawkfish
Half Black Angelfish
Lemonpeel Angelfish
Golden Angelfish
Lyretail Hogfish
Spotted Hawkfish
Gray Angelfish
Overview Native to the Western Atlantic, commonly found near coral reefs and rocky outcroppings in the Caribbean and Gulf of Mexico. Large angelfish with a dark gray body covered in lighter scale markings and a broad, crescent-shaped tail fin. Juveniles feature a...