Where to buy Long-Finned Cardinalfish
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About Long-Finned Cardinalfish
Archamia macroptera is a small cardinalfish with an elongated, laterally compressed body. It displays reddish to dusky coloration with two distinct dark stripes running along the body, and characteristically elongated dorsal and anal fins that give the species its "long-finned" common name. The species has large eyes typical of nocturnal apogonids.
Key facts
- Temperament
- Peaceful
- Care Requirements
- • Minimum 30-gallon aquarium; larger for groups • Peaceful fish; keep with compatible small reef inhabitants • Temp 72–78°F, pH 8.1–8.3, specific gravity 1.020–1.025 • Moderate lighting, plenty of rockwork & caves for shelter • Feed small frozen/live foods: copepods, amphipods, mysis shrimp
- Care Level
- Moderate
- Diet
- carnivore
- Difficulty Level
- Archamia macroptera is moderately difficult, requiring stable water conditions, nocturnal feeding habits, and peaceful tankmates. They are best suited for experienced aquarists comfortable with low-light reef setups and careful feeding protocols.
- Reef safety
- Reef Safe
- Diet Details
- Feed small frozen foods including mysis shrimp, copepods, and brine shrimp. This species is a nocturnal planktivore-carnivore and may be reluctant to eat during the day; offer food at dusk or use low lighting to encourage feeding.
- Water Parameters
- Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.023-1.025
- Family
- Apogonidae
- Min tank size
- 30 gallons
- Appearance
- Archamia macroptera is a small cardinalfish with an elongated, laterally compressed body. It displays reddish to dusky coloration with two distinct dark stripes running along the body, and characteristically elongated dorsal and anal fins that give the species its "long-finned" common name. The species has large eyes typical of nocturnal apogonids.
- Feeding Schedule
- 1-2 times daily
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