
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.
Tobacco Basslet
Speckled Blue Grouper
Threadfin Cardinalfish
Lawnmower Blenny
Longnose Filefish
Humpback Grouper
Bluelined Hind
Herald’s Angelfish
Ochre-striped Cardinalfish
Smith’s Fangblenny
Red Sea Mimic Blenny
Lyretail Grouper
Banggai Cardinalfish
Overview Endemic to the Banggai Islands of Indonesia, typically inhabiting shallow reefs and seagrass beds. Recognizable for its distinctive silver body, bold black vertical stripes, and white spots. Calm and peaceful nature, making it suitable for community reef...
Leopard Blenny
Pineapplefish
Coral Grouper
Coral Beauty Angelfish
Goldspot Blenny
Seale’s Cardinalfish
Orbiculate Cardinalfish
Bluestriped Fangblenny
Overview Native to the Indo-Pacific region, commonly found near coral reefs and lagoon habitats. Distinctive slender body with alternating bright blue and black horizontal stripes. Known for its unique behavior of mimicking cleaner wrasses to approach other fish and...
Midas Blenny
Five-lined Cardinalfish
Peacock Grouper
Marine Betta
White-streaked Grouper
Twospot Cardinalfish
Pajama Cardinalfish
Convict Blenny
Overview Native to the Indo-Pacific region, typically inhabiting coral reefs and rocky crevices. Distinctive eel-like body with striking black and white horizontal stripes, resembling a "convict" pattern. Known for its unique burrowing and schooling behavior, often...