Orange Line Chromis

Acanthochromis polyacanthus

(1 Reviews)

Orange Line Chromis

Orange Line Chromis

Acanthochromis polyacanthus

(1 Reviews)

Free Shipping

With $199.00 or more in Marine Life.
More details...

Orange Line Chromis Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 4 inches

The Orange Line Chromis (Acanthochromis polyacanthus), also known as the Spiny Chromis, is a small damselfish found among the Indo-Pacific Ocean, where they seek shelter among the corals and rocks of local reefs. Juveniles have grey or bronze coloration with horizontal, yellow lines that trace along their lateral line, along with black streaks on their caudal fin. Adults have a black or grey body with a white posterior. They do best if kept in pairs or small schools. They are peaceful, though they can show semi-aggressive or territorial behavior when paired and breeding. Their diet should consist of frozen, carnivorous food, such as mysis shrimp or krill. They do well in aquariums over 30 gallons and should have plenty of rocks to hide among. 

Orange Line Chromis Overview

Welcome to the exciting world of saltwater aquariums, where the vibrant Orange Line Chromis (Acanthochromis polyacanthus) takes center stage. This captivating marine species is popular among hobbyists and is known for its lively presence and stunning coloration. Let's delve into essential aspects of keeping the Orange Line Chromis in your saltwater aquarium.

Habitat of the Orange Line Chromis

Originating from the warm waters of the Indo-Pacific region, the Orange Line Chromis is commonly found in coral-rich environments, particularly around reefs and lagoons. Recreating this habitat in your aquarium is vital to ensuring the well-being of these fascinating creatures.

Reef Safety of the Orange Line Chromis

The Orange Line Chromis is considered reef-safe, making it an excellent choice for reef aquarium enthusiasts. Its peaceful nature and small size make it compatible with various coral species, contributing to the overall aesthetic of your underwater ecosystem.

Size and Lifespan of the Orange Line Chromis

These chromis species exhibit modest growth, reaching an average size of 3 inches (7.6 cm) in length. With proper care, Orange Line Chromis can thrive in captivity for 5 to 7 years.

Diet of the Orange Line Chromis in Captivity

Maintaining a balanced diet is crucial for the well-being of your Orange Line Chromis. They are omnivores, and their diet should include a mix of high-quality flake or pellet food supplemented with frozen or live brine shrimp and mysis shrimp.

Aquaculture Availability of the Orange Line Chromis

Orange Line Chromis are readily available through reputable suppliers like As aquacultured species, they are bred in controlled environments, ensuring their health and reducing the impact on natural populations. This availability allows enthusiasts to contribute to sustainable practices in the aquarium hobby.

Compatibility of the Orange Line Chromis

The Orange Line Chromis is a sociable species, thriving in groups of three or more. When selecting tank mates, consider other peaceful species with similar habitat preferences. Avoid aggressive or territorial fish that may disrupt the harmony of your aquarium.

Sexual Dimorphism of the Orange Line Chromis

Distinguishing between male and female Orange Line Chromis can be challenging, as they exhibit minimal sexual dimorphism. However, keen observers may notice subtle differences in size and behavior, with males often being slightly more extensive and more territorial.

Juvenile to Adult Coloration Changes of the Orange Line Chromis

Witness the mesmerizing color transformation of Orange Line Chromis as they mature. Juveniles display a vivid orange stripe along their dorsal fin, intensifying and extending along their body as they reach adulthood. This vibrant coloration adds a dynamic visual element to your aquarium.

Temperament of the Orange Line Chromis

Known for their docile temperament, Orange Line Chromis contribute to a peaceful aquarium environment. Their social nature is evident as they gracefully swim in schools, creating a captivating display for onlookers.

Tank Requirements for the Orange Line Chromis

  • Minimum Aquarium Size: A minimum tank size of 30 gallons is recommended, allowing ample space for a small school to thrive.
  • Water Conditions:
    • pH: Maintain a pH level between 8.1 to 8.4.
    • Salinity: Keep salinity within the range of 1.020 to 1.025.
    • Water Temperature: Maintain a temperature range of 75 to 82°F.
    • Water Flow: Provide moderate water flow to simulate their natural habitat.

Other Common Names of the Orange Line Chromis

The Orange Line Chromis may be known by other common names, including the Orange Dottyback, Three-Stripe Damselfish, or simply Orange Chromis.

Five Compatible Tank Mates

Why Choose stands out as a reliable source for obtaining Orange Line Chromis for your aquarium. With a commitment to sustainable practices and the well-being of marine life, ensures that every fish is healthy, responsibly sourced, and carefully transported to your doorstep. Choose for a seamless and ethical addition to your saltwater aquarium.


In conclusion, the Orange Line Chromis is a captivating species that brings life and color to saltwater aquariums. Whether you are an experienced hobbyist or a newcomer, the charm and ease of care make the Orange Line Chromis an excellent choice for enhancing the beauty of your marine environment. Acquire your Orange Line Chromis from and embark on a journey of underwater fascination today.

Reviewed by: Keith Loepker on Jan. 2, 2024

Join the club! Get our best deals first!

Be The First To Hear About Our Exclusive Deals & Latest Updates!