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.
Sailfin Tang
Russell’s Lionfish
Shortnose Unicornfish
Pyramid Butterflyfish
Fu Manchu Lionfish
Tinker’s Butterflyfish
Raccoon Butterflyfish
Whitecheek Tang
Foxface Rabbitfish
Coral Rabbitfish
Maroon Clownfish
Overview Native to the Indo-Pacific, commonly inhabiting coral reefs and lagoon areas. Recognizable by its deep maroon coloration with distinctive white or yellowish vertical bands. Known for bold personality, territorial nature, and striking appearance. Popular among...
Decorated Dartfish
Overview Found in the Indo-Pacific region. Known for their elegant appearance with elongated dorsal fin rays and vibrant coloration, often including shades of purple, red, and white. They have a slender body and a peaceful demeanor. Decorated dartfish are often seen...
Pennant Bannerfish
Messmate Pipefish
Golden Butterflyfish
Eightband Butterflyfish
Oval Butterflyfish
Saddleback Butterflyfish
Bennett’s Butterflyfish
Half Black Angelfish
Pink Skunk Clownfish
Clarkii Clownfish
Orange Shoulder Tang
Atlantic Blue Tang
Yellow Tang
Antennata Lionfish
Singular Bannerfish
Yellow Longnose Butterflyfish
Pearlscale Butterflyfish
Mirror Butterflyfish
Saddleback Butterflyfish
Purple Tang
One Spot Foxface Rabbitfish
Radiata Lionfish
Blue Tang
Bluespine Unicorn Tang
Overview Found in the Indo-Pacific region. Known for their distinctive long horn-like protrusion on their forehead, which develops with age. They have a laterally compressed body and a lunate tail. Unicorn tangs are active swimmers and often seen grazing on algae....
Big Longnose Butterflyfish
Copperband Butterflyfish
Latticed Butterflyfish
Meyer’s Butterflyfish
Lined Butterflyfish
Collare Butterflyfish
Eastern Triangle Butterflyfish
Herald’s Angelfish
Percula Clownfish
Indian Ocean Mimic Tang
Lined Surgeonfish
Achilles Tang
Barhead Spinefoot
Zebra Dartfish
Red Sea bannerfish
Zebra Lionfish
Vagabond Butterflyfish
Rainford’s Butterflyfish
Threadfin Butterflyfish
Brown Tang
Magnificent Rabbitfish
Mombasa Lionfish
Firefish Goby
Overview Found in the Indo-Pacific region. Known for their striking appearance with elongated dorsal and caudal fin rays, and vibrant coloration, typically red, white, and yellow. They have a slender body and a peaceful demeanor. Magnificent dartfish are often seen...
Naso Tang
Overview Found in the Indo-Pacific region. Known for their distinctive appearance, including a prominent nose horn (more developed in males) and vibrant coloration. They have a laterally compressed body and a lunate tail. Naso tangs are active swimmers and often seen...
Banded Pipefish
Pacific Double-Saddle Butterflyfish
Fourspot Butterflyfish
Merten’s Butterflyfish
Orangeface Butterflyfish
Four-Eyed Butterflyfish
Blacktail Butterflyfish
Coral Beauty Angelfish
Ocellaris Clownfish
Convict Tang
Powder Blue Surgeonfish
Red Lionfish
Scissortail Dartfish
Overview Native to the Indo-Pacific, commonly inhabiting reef slopes, lagoons, and sandy rubble areas. Recognizable by its slender body, pale bluish-grey coloration, and distinct black fins. Peaceful and shy nature, often observed hovering in open water above reefs or...
Schooling Bannerfish
Dwarf Lionfish
Teardrop Butterflyfish
Spotband Butterflyfish
Sohal Tang
Indian Ocean Sailfin Tang
Orange-Spotted Spinefoot
Blue Gudgeon
Overview Native to the Indo-Pacific region, frequently found over sand and rubble substrates near reefs. Distinctive slender body with a pale blue-green coloration and iridescent blue highlights along its sides. Known for peaceful and timid behavior, typically...
Helfrich’s Firefish
Horned Bannerfish
Kole Tang
Melon Butterflyfish
Ornate Butterflyfish
Blackback Butterflyfish
Klein’s Butterflyfish
Burgess’ Butterflyfish
Atlantic Spadefish
Orange Skunk Clownfish
Maldives Clownfish
Mimic Tang
