
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.
Yellow Tang
Ward’s Sleeper Goby
The Golden Head Sleeper Goby
Twin-Spot Goby
Red Lionfish
Russell’s Lionfish
Antennata Lionfish
Shortnose Unicornfish
Spiny Seahorse
Sharknose Goby
Yellow Clown Goby
Zebra Lionfish
Dwarf Lionfish
Fu Manchu Lionfish
Yellow Watchman Goby
Rainford’s Goby
Wheeler’s Shrimp Goby
Steinitz’s Shrimp Goby
Randall’s Shrimp Goby
Wide-Banded Shrimp Goby
Sohal Tang
Whitecheek Tang
Purple Tang
Brown Tang
Indian Ocean Sailfin Tang
Diamond Goby
Blackray Shrimp Goby
Radiata Lionfish
Mombasa 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....
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...
Decorated Goby
Yellow Seahorse
Overview Found in the Indo-Pacific region. Known for their ability to change color and their prehensile tail. They have a distinctive equine profile with a curved body and a long snout. Yellow seahorses are slow-moving and have a unique upright swimming posture....