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Scarlet Cardinalfish (Apogon erythrinus)

Find Scarlet Cardinalfish across reef-livestock retailers on ReefDock. Compare sources, check known pricing where available, and review care information before you buy.

Scarlet Cardinalfish
Photo: (c) DavidR.808, some rights reserved (CC BY-NC), uploaded by DavidR.808 · cc-by-nc
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Where to buy Scarlet Cardinalfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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    Search Petco

About Scarlet Cardinalfish

The Scarlet Cardinalfish is a small, deep-bodied fish with brilliant red to scarlet coloration throughout its body. It has two dorsal fins, large eyes, and a slightly compressed body typical of the cardinalfish family (Apogonidae). The fish displays minimal patterning, with its vibrant red hue being the defining characteristic.

Key facts

Reef safety
Reef Safe
Temperament
Peaceful
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Family
Apogonidae
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.026
Appearance
The Scarlet Cardinalfish is a small, deep-bodied fish with brilliant red to scarlet coloration throughout its body. It has two dorsal fins, large eyes, and a slightly compressed body typical of the cardinalfish family (Apogonidae). The fish displays minimal patterning, with its vibrant red hue being the defining characteristic.
Feeding Schedule
2-3 times daily
Care Requirements
• Minimum 30 gallon tank with plenty of caves and hiding places • Nocturnal species; provide dim lighting and shelter during the day • Temperature range 72–78°F; maintain stable conditions • Salinity range 1.020–1.026 SG; pH 8.1–8.3 • Feed small live or frozen foods such as mysis shrimp, brine shrimp, and copepods 2–3 times daily
Common Health Issues
Ich, bacterial infections, malnutrition if not fed appropriately, shock from poor acclimation
Origin
Indo-Pacific region, ranging from the Red Sea and East Africa to the Hawaiian Islands and Great Barrier Reef, typically found in reef environments at moderate depths.
Care Level
Moderate
Max Size
3.5

Research before you buy

ReefDock is the sister app to Reef Trak. Use Reef Trak to research and log fish, keep tank parameters organized, and maintain a complete livestock history. Log this fish on Reef Trak.

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