Red Stop Light Cardinalfish

Latin name: (Apogonichthys hyalinus)

Care Level








Preferred Conditions


Avg. Max Size


Minimum Tank Size

30 gallons


This species of fish is best suited for a larger aquarium, preferably 30 gallons or larger. The tank should include a cave and peaceful tank mates to provide a stress-free environment for the fish. Additionally, it should have some sea grass or other plants, or long-spined urchins, to offer the fish a place to hide and camouflage. It is important to note that they should be kept in a small group, as they will establish a strict hierarchy without aggressive behavior. Furthermore, it is important to provide a space that allows room for each individual fish to feel secure. Keeping a close eye on the tank’s inhabitants is essential to ensure the fish maintain their natural behavior.

The Red Stop Light Cardinalfish is a vibrant addition to any saltwater aquarium, and they are an easy to care for species. To ensure that they remain healthy and active, they require a well balanced diet of meaty foods such as feeder shrimp, flake foods, pellet foods and frozen brine or mysis shrimp. Additionally, it is important to supplement their diet with some seaweed or algae-based products for optimal health. With proper care, the Red Stop Light Cardinalfish can be a beautiful and rewarding addition to your saltwater tank.

Approximate Purchase Size:

Gill's Fish