Saltwater Fish Species

Browse our saltwater fish species profiles, each with care requirements, tank size, diet and reef compatibility.

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.

Spotted Hawkfish

Seale’s Cardinalfish

Twospot Cardinalfish

Threadfin Cardinalfish

Orbiculate Cardinalfish

Pajama Cardinalfish

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...

Longnose Hawkfish

Yellow Boxfish

Overview Found in the Indo-Pacific region. Known for their box-like shape and distinctive coloration, which is often bright yellow with black spots in juveniles, turning to a more subdued color in adults. They have a rigid, bony carapace that covers their body. Smooth...