The Yellow Cardinal (Ostorhinchus luteus) can be found among the Indo-Pacific Ocean. Their body is a yellow or beige color with transparent fins. They are found in small schools among reefs or rocky outcroppings, where they hide from predators and search for small crustaceans, which make up their diet. They should be housed in an aquarium with at least 20 gallons with plenty of live rock for them to hide among. They require carnivorous preparations, usually mysis or krill, and should not be kept with larger predatory fish.

The Yellow Cardinal (Ostorhinchus luteus) - A Captivating Addition to Saltwater Aquariums

The Yellow Cardinal (Ostorhinchus luteus) is a captivating saltwater fish that has gained popularity among marine aquarium enthusiasts for its vibrant coloration and relatively easy care requirements. This species hails from the Western Pacific, inhabiting coral-rich environments, making it a visually appealing addition to a well-maintained saltwater aquarium.

Habitat of Yellow Cardinals

Yellow Cardinals are commonly found in the wild in coral reefs, particularly in areas with abundant branching corals and rubble. When kept in captivity, it is crucial to replicate their natural habitat by providing ample live rock structures and a substrate mimicking the sandy ocean floor.

Reef Compatibility of Yellow Cardinals

Yellow Cardinals are considered reef-safe, as they do not tend to nip at corals or bother other invertebrates within the aquarium. This makes them suitable for reef enthusiasts looking to add a splash of vivid yellow to their coral-filled setups.

Size and Lifespan of Yellow Cardinals

These fish are relatively small, reaching a maximum size of around 3 inches (7.5 cm) in length. With proper care, Yellow Cardinals can live for several years in captivity, typically 5 to 8 years.

Diet of Yellow Cardinals in Captivity

Yellow Cardinals are omnivores, and in captivity, they thrive on a varied diet that includes high-quality marine pellets, frozen or live brine shrimp, mysis shrimp, and other small invertebrates. A diverse diet ensures they receive the essential nutrients needed for their well-being.

Aquaculture and Availability of Yellow Cardinals

Yellow Cardinals are occasionally available through aquaculture efforts. Check with reputable suppliers and retailers to inquire about the current availability of aquacultured specimens.

Compatibility of Yellow Cardinals with Other Fish and Invertebrates

Yellow Cardinals are generally peaceful fish, making them compatible with various tank mates. However, it is essential to avoid aggressive or overly territorial species. Here are five compatible tank mates:     

      
1. Firefish (Nemateleotris spp.)
      
2. Clownfish (Amphiprion spp.)
      
3. Gobies (e.g., Gobiodon spp.)
      
4. Chromis (Chromis spp.)
      
5. Royal Gramma (Gramma loreto)
    

Sexual Dimorphism of Yellow Cardinals

Yellow Cardinals exhibit minimal sexual dimorphism, with males and females having similar external characteristics. Distinguishing between the sexes is challenging, and visual differences are often subtle or nonexistent.

Juvenile to Adult Coloration Changes in Yellow Cardinals

Juvenile Yellow Cardinals display a subdued yellow color, intensifying and becoming more vibrant as they mature into adulthood. The transition from juvenile to adult coloration is gradual and adds to the visual appeal of these fish over time.

Temperament of Yellow Cardinals

Known for their peaceful demeanor, Yellow Cardinals are an excellent choice for community aquariums. They generally get along with other non-aggressive species, creating a serene aquatic environment.

Tank Requirements for Yellow Cardinals

    
• Minimum Aquarium Size: A tank with at least 30 gallons capacity is suitable for a single Yellow Cardinal. Larger tanks provide more swimming space and allow for a more natural territorial distribution.
    
• Water Conditions:       
          
  • pH: Maintain a stable pH level between 8.1 and 8.4.
          
  • Salinity: Keep salinity in the range of 1.020 to 1.025.
          
  • Water Temperature: Maintain a temperature range of 74°F to 78°F.
          
  • Water Flow: Provide moderate water flow to simulate the gentle currents in their natural habitat.
        
      
  

Other Common Names for Yellow Cardinals

    Yellow Dottyback
    Golden Cardinalfish   

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Yellow Cardinal as a Captivating Addition

In conclusion, the Yellow Cardinal is a captivating addition to saltwater aquariums, bringing a burst of color and tranquility to any setup. With proper care and attention to their specific needs, these fish can thrive in captivity, delighting hobbyists with their stunning appearance and peaceful nature.