Where to buy Threadfin Cardinalfish
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About Threadfin Cardinalfish
Small, slender cardinalfish with pale red to orange coloration and thread-like pectoral fin rays that extend beyond the body. The eyes are notably large and dark, with a subtle barred pattern along the body.
Key facts
- Temperament
- Peaceful
- Min tank size
- 20 gallons
- Difficulty Level
- Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
- Appearance
- Small, slender cardinalfish with pale red to orange coloration and thread-like pectoral fin rays that extend beyond the body. The eyes are notably large and dark, with a subtle barred pattern along the body.
- Care Level
- Moderate
- Care Requirements
- • Minimum 20-gallon aquarium, larger for groups • Stable water parameters: 72-78°F, pH 8.1-8.3, sg 1.020-1.025 • Low to moderate lighting; prefers dimly lit areas and caves • Feed small meaty foods: copepods, mysis shrimp, small pellets 2-3× daily • Peaceful community fish; schools with conspecifics in larger tanks
- Common Health Issues
- Marine ich, Fin rot, Swim bladder disorder, Hole-in-the-head, Columnaris disease
- Feeding Schedule
- 2-3 times daily
- Origin
- Indo-Pacific region, from the Great Barrier Reef to the Philippines and Indonesia.
- Max Size
- 2.8
- Diet Details
- Feed small meaty foods including copepods, amphipods, mysis shrimp, and fine marine flakes. In established reef aquaria with copepod populations, the fish will graze passively; captive-fed specimens benefit from 2–3 small daily feedings.
- Diet
- carnivore
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