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Black Cardinalfish (Apogon melas)

Find Black Cardinalfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Black Cardinalfish
Photo: Rickard Zerpe · CC BY 2.0
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Where to buy Black 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 Black Cardinalfish

The Black Cardinalfish is a small, stocky fish with a deep black to dark brown coloration throughout its body. It has a rounded head, large mouth, and two dorsal fins. The body is somewhat compressed laterally with a relatively large eye adapted for nocturnal feeding, and the pectoral fins are moderately sized and translucent.

Key facts

Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.023-1.025
Min tank size
30 gallons
Appearance
The Black Cardinalfish is a small, stocky fish with a deep black to dark brown coloration throughout its body. It has a rounded head, large mouth, and two dorsal fins. The body is somewhat compressed laterally with a relatively large eye adapted for nocturnal feeding, and the pectoral fins are moderately sized and translucent.
Care Requirements
• Minimum 30-gallon tank; prefers deeper, darker environments • Water: 72-78°F, pH 8.1-8.3, SG 1.020-1.025, low light preferred • Nocturnal; provide caves, overhangs, and dim lighting • Feed small meaty foods: frozen mysis shrimp, copepods, bloodworms • Peaceful; avoid large predatory fish; pair with non-aggressive species
Reef safety
Reef Safe
Difficulty Level
Moderate difficulty. Black Cardinalfish are hardy and peaceful but are nocturnal and may be shy; they require dim lighting, hiding places, and live or quality frozen foods to thrive. They do best in established reef aquaria with minimal aggression from tankmates.
Diet
carnivore
Feeding Schedule
1-2 times daily
Diet Details
Feed live or frozen meaty foods such as mysis shrimp, copepods, and finely chopped fish. This species is nocturnal and may require time to acclimate to feeding routines; target feeding or feeding at dusk increases feeding success.
Temperament
Peaceful
Origin
Indo-Pacific region, ranging from the Red Sea and East Africa through Southeast Asia to the Great Barrier Reef and northern Australia. Found in shallow reef environments and coastal waters.
Common Health Issues
Ich, parasitic infections, starvation if not fed appropriately, stress-related disease

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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