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.

Sargassum Triggerfish

Redcoat Squirrelfish

Rectangle Triggerfish

Azure Damselfish

Smith’s Fangblenny

Rock Beauty

Queen Angelfish

Watanabe’s Angelfish

Barred Soapfish

Whitetail Pygmy Angelfish

Rusty Angelfish

Blue Throat Triggerfish

Halfmoon Triggerfish

Hawaiian Squirrelfish

Crown Squirrelfish

Blackbelly Triggerfish

Arabian Picasso Triggerfish

Picasso Triggerfish

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...

Darkfin Soldierfish

Overview Found in the Indo-Pacific region. Known for their reddish coloration and deep body shape, typical of soldierfish. They have large eyes, adapted for nocturnal activity. Shadowfin soldierfish are often found in caves or under ledges. Feeding They are nocturnal...