Brassy Cardinal

Ostorhinchus flavus

(0 Reviews)

Brassy Cardinal

Brassy Cardinal

Ostorhinchus flavus

(0 Reviews)

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Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Carnivore
Origin: Pacific Ocean
Acclimation Time: 2+ hours
Reef Safe: Yes
Minimum Tank Size: 20 gallons
Max Size: 3 inches

The Brassy Cardinal (Ostorhinchus flavus), also known as the Yellow Cardinal can be found among the Pacific Ocean. As their name suggests, they have a brass or orange colored body, with a black eye and black spot at the peduncle of their caudle fin. They naturally occur in schools hiding among local reefs and rocky outcroppings. They feed on small crustaceans, such as copepods and amphipods. Reaching a maximum size of 3 inches, they should be kept in a tank of at least 20 gallons with plenty of live rock to hide among. 


The Brassy Cardinal (Ostorhinchus flavus) - A Captivating Addition to Saltwater Marine Aquariums


The Brassy Cardinal, scientifically known as Ostorhinchus flavus, is a captivating addition to saltwater marine aquariums, prized for its vibrant coloration and ease of care. This species, commonly known as the Brassy Cardinal, offers enthusiasts a stunning marine fishkeeping experience. Below, we delve into essential aspects of keeping Ostorhinchus flavus in captivity, providing valuable insights into its habitat, compatibility, diet, coloration changes, temperament, tank requirements, and water conditions.


Habitat of the Brassy Cardinal


Originating from the Indo-Pacific region, the Brassy Cardinal is typically found in coral-rich environments, especially around the edges of reefs. This species thrives in the warm, tropical waters of the ocean, making it an ideal candidate for saltwater aquariums.


Reef Safety of the Brassy Cardinal


The Brassy Cardinal is considered reef safe, making it suitable for coral-centric aquariums. Its peaceful nature and small size allow it to coexist well with various coral species, creating a visually appealing and balanced aquatic environment.


Size and Lifespan of the Brassy Cardinal


Adult Brassy Cardinals typically reach about 2 to 3 inches, making them well-suited for smaller aquariums. In captivity, they boast a lifespan of approximately 5 to 7 years, given proper care and a suitable environment.


Diet of the Brassy Cardinal in Captivity:


Feeding the Brassy Cardinal is straightforward, as it readily accepts a diet of high-quality marine flake food, pellets, and frozen or live brine shrimp. A varied diet helps ensure the fish receives essential nutrients for optimal health and coloration.


Aquaculture and Availability of the Brassy Cardinal


The Brassy Cardinal is successfully aquacultured, enhancing its availability to hobbyists. This sustainable practice reduces the impact on wild populations and provides enthusiasts with a more complex and healthier specimen.


Compatibility of the Brassy Cardinal with Other Fish and Invertebrates:


The Brassy Cardinal is an excellent community fish known for its peaceful demeanor. It coexists harmoniously with a variety of other peaceful species. When selecting tankmates, consider compatible species such as Firefish, Clownfish, Gobies, and smaller wrasses.


Sexual Dimorphism of the Brassy Cardinal


The Brassy Cardinal does not exhibit pronounced sexual dimorphism, making it challenging to differentiate between males and females visually. However, these fish are known to form monogamous pairs in the wild.


Juvenile to Adult Coloration Changes in the Brassy Cardinal:


Juvenile Brassy Cardinals often display subdued coloration, gradually transitioning into their striking adult colors as they mature. The transformation includes vibrant yellow and blue hues, creating a visually appealing spectacle in the aquarium.


Temperament of the Brassy Cardinal


Renowned for its calm and non-aggressive nature, the Brassy Cardinal is an excellent choice for novice and experienced hobbyists. Its peaceful demeanor makes it an ideal candidate for community tanks.


Tank Requirements for the Brassy Cardinal


Maintaining a suitable environment for the Brassy Cardinal is essential for its well-being. A minimum tank size of 30 gallons is recommended to provide ample swimming space. Ensure the tank is well-aerated and equipped with live rock structures to mimic its natural habitat.


Water Conditions for the Brassy Cardinal


Maintaining specific water conditions is crucial for the health of Brassy Cardinals. Aim for a pH level between 8.1 and 8.4, salinity ranging from 1.020 to 1.025, water temperature between 75°F and 82°F, and moderate water flow to simulate the conditions of its native habitat.


Other Common Names for the Brassy Cardinal:


The Brassy Cardinal may also be known by other common names, including Yellow Cardinalfish and Yellow Striped Cardinalfish.


Five Compatible Tank Mates for the Brassy Cardinal:


Why Choose Brassy Cardinal from


When purchasing the Brassy Cardinal, enthusiasts can trust to provide quality specimens sourced through responsible and sustainable practices. With a commitment to customer satisfaction, ensures that each fish is healthy, acclimated to aquarium life, and ready to thrive in its new home.


In conclusion, the Brassy Cardinal is an excellent choice for saltwater aquarium enthusiasts, offering a combination of captivating coloration, ease of care, and compatibility with various tankmates. Whether you are a seasoned hobbyist or a beginner, the Brassy Cardinal from promises to enhance your marine aquarium experience.

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