Ventralis Anthias

Compsanthias ventralis

(1 Reviews)

Ventralis Anthias

Ventralis Anthias

Compsanthias ventralis

(1 Reviews)

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Ventralis Anthias Care Facts

Care Level: Expert
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 70 gallons
Max Size: 3 inches
The Ventralis Anthias, Compsanthias ventralis,is hermaphroditic meaning all are born females, and when needed the dominant female turns into male. They also display sexual dimorphism with the male featuring a pink body with a bright yellow streak along the back that is also speckled blue and purple with blue highlights on the fins and eyes while the female displays the same pink body, the yellow streak along the back is solid with one red/orange line along the back and eyes. They can be kept as a mated pair, or in a small school of females. Avoid keeping two males in the same tank, as it can lead to extreme aggression.

They are peaceful and can be kept in a reef tank setting with plenty of live rock, but since they are one of the more sensitive genus of Anthias, they will require expert care. Diet should include a variety of a steady supply of copepods, frozen mysis and vitamin enriched brine shrimp, as well as high quality flake foods 3-5 times daily. 


Discover the Vibrant Ventralis Anthias for Your Saltwater Marine Aquarium


The Ventralis Anthias (Compsanthias ventralis) is a captivating species of saltwater marine fish that can be a delightful addition to a well-maintained aquarium. This comprehensive product description will cover various aspects of keeping Ventralis Anthias in a home aquarium, providing valuable insights for hobbyists and enthusiasts.


Habitat of the Ventralis Anthias: Thriving in the Warm Waters of the Indo-Pacific


Ventralis Anthias are native to the warm, tropical waters of the Indo-Pacific region. They are commonly found near coral reefs, particularly in areas with moderate to strong water currents. These fish congregate in schools or small groups, seeking shelter among corals and rocky crevices.


Reef Compatibility of the Ventralis Anthias: A Graceful Addition to Reef Tanks


The Ventralis Anthias is generally considered reef-safe. They do not display a propensity for nipping at corals or bothering other invertebrates in a reef tank. However, it's essential to provide them with ample hiding spots and appropriate tank mates to reduce stress and aggression.


Size and Lifespan of the Ventralis Anthias: Small Marvels with a 3 to 5-Year Lifespan


These fish are relatively small, with adult specimens typically reaching a size of 3 to 4 inches (7.5 to 10 centimeters). In captivity, they have a lifespan of approximately 3 to 5 years when provided with proper care.


Diet of the Ventralis Anthias in Captivity: Omnivores with a Taste for Variety


Ventralis Anthias are omnivores and should be fed a varied diet. In captivity, they readily accept high-quality marine pellets, flakes, frozen foods like mysis shrimp, brine shrimp, and finely chopped seafood. To maintain their vibrant colors and overall health, providing a diverse and balanced diet is essential.


Aquaculture and Availability of the Ventralis Anthias: Sourcing with Care


While Ventralis Anthias are occasionally available through aquaculture, they are more commonly sourced from the wild. Availability may vary depending on your location and the time of year, so checking with reputable marine aquarium suppliers for current stock is advisable.


Compatibility of the Ventralis Anthias with Other Fish and Invertebrates: Creating Harmony in Your Tank


These Anthias are generally peaceful fish but can become territorial, especially males if kept in confined spaces. Keeping them in groups of one male to multiple females is advisable to minimize aggression. Compatible tank mates should be non-aggressive species of similar size and temperament. Below are five suitable tank mates for Ventralis Anthias:

  • Banggai Cardinalfish (Pterapogon kauderni): Peaceful and attractive, these cardinalfish make great companions.
  • Firefish Goby (Nemateleotris magnifica): Their vibrant colors and timid nature complement the Ventralis Anthias well.
  • Royal Gramma (Gramma loreto): A colorful and non-aggressive fish that pairs nicely with Anthias.
  • Clownfish (Amphiprion spp.): Their unique behavior and vibrant colors can create a visually appealing tank.
  • Cleaner Shrimp (Lysmata amboinensis): These invertebrates help maintain water quality and are compatible with Anthias.

Sexual Dimorphism of the Ventralis Anthias: Identifying Males and Females


Ventralis Anthias exhibit sexual dimorphism, making it relatively easy to distinguish between males and females. Males tend to be larger, display more vibrant colors, and have elongated dorsal fins, while females are smaller and lack these prominent fin extensions.


Juvenile to Adult Coloration Changes of the Ventralis Anthias: A Visual Transformation


Juvenile Ventralis Anthias typically display subdued coloration, often with a yellowish-orange body and faint barring. As they mature, their colors become more pronounced, with males developing a striking mix of vibrant red, pink, and orange hues while females maintain a more subdued appearance.


Temperament of the Ventralis Anthias: Peaceful and Social Aquarium Dwellers


Ventralis Anthias are generally peaceful and social fish. They thrive in groups where they can exhibit their natural schooling behavior. However, it's crucial to maintain a harmonious environment with compatible tank mates to prevent aggression.


Tank Requirements of the Ventralis Anthias: Creating the Ideal Habitat


To ensure the well-being of Ventralis Anthias, you should provide them with the following tank conditions:

  • Minimum Aquarium Size: A tank with a capacity of at least 55 gallons (208 liters) is recommended for a small group of Ventralis Anthias.
  • Water Conditions:    
    • pH: Maintain a stable pH level between 8.1 and 8.4.
    • Salinity: Keep the salinity level within the range of 1.022 to 1.026.
    • Water Temperature: Maintain a temperature range of 75-82°F (24-28°C).
    • Water Flow: Moderate to strong water movement is preferred, mimicking their natural habitat.

Other Common Names of the Ventralis Anthias: Exploring Nomenclature


The Ventralis Anthias is also known by various names, including the Threadfin Anthias and the Threadfin Swallowtail.


Why Choose Ventralis Anthias from Assurance of Quality


When considering purchasing Ventralis Anthias, choosing a reputable supplier like is essential. is known for its commitment to the health and well-being of marine animals, offering high-quality specimens that have been carefully acclimated and quarantined to minimize stress and disease risk. Their knowledgeable staff can guide the proper care and maintenance of these beautiful fish, ensuring a successful and enjoyable aquarium experience for hobbyists.


In conclusion, the Ventralis Anthias is a captivating and vibrant addition to a saltwater marine aquarium. With proper care, suitable tank mates, and a well-maintained environment, these fish can thrive and bring beauty to your underwater world. If you're considering adding Ventralis Anthias to your aquarium, source them from a reputable supplier like to ensure the best possible experience for you and your fish.

Good price, fast shipment of my Ventralis Anthias: Female.

Reviewed by: William Nottingham on Sept. 11, 2021

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