Kaudern’s Cardinalfish Trio with 2 FREE
Purchase 3 Kaudern’s Cardinalfish and receive 2 more FREE!
The Kaudern’s Cardinal is highly sought after for its ease of care, attractive color pattern, and distinctively long and elegant fins. The Kaudern’s Cardinal, also known as the Banggai Cardinalfish or Longfin Cardinalfish, is metallic silver highlighted by rich black stripes and white, celestial spots on the body and fins. This sophisticated color pattern makes it a visual striking and memorable addition to most saltwater aquariums.
A 30 gallon or larger aquarium with cave-like rockwork and peaceful tank mates is ideal for this slow and methodical swimmer. Due to its aggressive behavior towards conspecifics, the Kaudern’s Cardinal should not be kept in large groups.
| Species | Kaudern’s Cardinalfish (Longfin Cardinalfish) |
|---|---|
| Color Pattern | Metalllic silver with black stripes and white spots |
| Size | Up to 4 inches |
| Water Conditions | Salinity: 1.020–1.025, Temperature: 72–78°F |
| Behavior | Aggressive toward same species; prefers solitude |
FAQ
Can I keep multiple Kaudern’s Cardinalfish in the same tank?
No, Kaudern’s Cardinalfish are aggressive toward their own kind and should not be kept in groups. A single specimen or a pair with compatible, non-aggressive tank mates is recommended.
What tank size is required for a Kaudern’s Cardinalfish?
A 30-gallon or larger tank with cave-like rockwork is recommended to provide adequate space and hiding spots.
Are the fish suitable for beginners?
The Kaudern’s Cardinalfish is relatively easy to care for, but requires stable water conditions and a well-maintained tank. Beginners should ensure they understand the species’ specific needs before introducing it.

Michael Sutherland –
The fish arrived healthy and looked vibrant. The color pattern is stunning with clear black stripes and white spots. I placed them in a 40-gallon tank with caves and they seem calm now. I didn’t keep more than one, as advised, and they’ve been active without aggression.
Adam Powell –
Great value with the free fish included. The long fins are impressive and the fish are active in their tank. I made sure to keep them alone and avoid other cardinals. Water parameters stayed stable after setup.
Charles Ellison –
The fish are beautiful and have adapted well to the tank. I followed the care instructions and added plenty of hiding spots. They don’t seem stressed and swim gracefully in the caves. Highly recommend for saltwater enthusiasts.