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.

Ward’s Sleeper Goby

Red Lionfish

Russell’s Lionfish

Antennata Lionfish

Rock Beauty

Queen Angelfish

Watanabe’s Angelfish

Zebra Lionfish

Dwarf Lionfish

Fu Manchu Lionfish

Spotted Hawkfish

Whitetail Pygmy Angelfish

Rusty Angelfish

Radiata Lionfish

Mombasa Lionfish

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...

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...