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Twin-Spot Cardinalfish (Archamia biguttata)

Find Twin-Spot 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.

Twin-Spot Cardinalfish
Photo: (c) Ian Shaw, all rights reserved, uploaded by Ian Shaw
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Where to buy Twin-Spot 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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    Search Amazon
  • Petco

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    Search Petco

About Twin-Spot Cardinalfish

Twin-Spot Cardinalfish are small, rounded-bodied fish with a distinctive pattern of two large dark spots on each side of the body, one near the gill cover and one on the rear body. They display reddish to orange-red coloration with pale/white spots or stripes, and have large eyes characteristic of nocturnal cardinalfish.

Key facts

Care Requirements
• Minimum 20 gallon tank with plenty of hiding places and coral crevices • Temperature range 72–78°F maintained through stable heating • pH 8.1–8.3 and salinity SG 1.020–1.025 required for stability • Nocturnal species; provide dim lighting and shelter during the day; will become active at dusk • Feed small carnivorous foods 1–2 times daily; can be shy feeders initially but will acclimate well in established tanks
Diet
carnivore
Feeding Schedule
1-2 times daily
Reef safety
Reef Safe
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Min tank size
20 gallons
Appearance
Twin-Spot Cardinalfish are small, rounded-bodied fish with a distinctive pattern of two large dark spots on each side of the body, one near the gill cover and one on the rear body. They display reddish to orange-red coloration with pale/white spots or stripes, and have large eyes characteristic of nocturnal cardinalfish.
Family
Apogonidae
Care Level
Moderate
Common Health Issues
Ich, parasitic infections, poor acclimation stress
Max Size
3.5

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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