ReefDock
ShopEquipmentLivestockFAQ
  1. Home
  2. /Shop
  3. /Livestock
  4. /Fish
  5. /Twin-Spot Cardinalfish

Twin-Spot Cardinalfish (Archamia biguttata)

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

Twin-Spot Cardinalfish
Photo: (c) Ian Shaw, all rights reserved, uploaded by Ian Shaw
Some retailer links may earn ReefDock a small commission at no extra cost to you. Learn more.

Where to buy Twin-Spot Cardinalfish

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

  • Saltwaterfish

    Search this retailer

    Search Saltwaterfish
  • Amazon

    Search this retailer

    Search Amazon
  • Petco

    Search this retailer

    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

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.

Related fish

  • Acares Midget Reef Chromis

    Chromis acares

  • Achilles Tang

    Acanthurus achilles

  • Adorned Wrasse

    Halichoeres cosmetus

  • African Basslet

    Liopropoma africanum

  • African Pygmy Angelfish

    Centropyge acanthops

  • Agile Chromis

    Chromis agilis

  • Aiptasia Eating Filefish

    Acreichthys tomentosus

  • Allard's Clownfish

    Amphiprion allardi

ReefDock

Reef-product search built by the maker of Reef Trak.

Questions? support@reeftrak.com

Shop

  • All reef products
  • Equipment
  • Livestock
  • Brands

Categories

  • Corals
  • Fish
  • Invertebrates
  • Equipment
  • Frags

About

  • Partners
  • About ReefDock
  • FAQ
  • ReefTrak integration
  • Affiliate disclosure

© 2026 ReefDock · Privacy · Terms