Three Stripe Damselfish

Three Stripe Damselfish
Latin name:
(Dascyllus aruanus)

Care Level








Preferred Conditions

sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4

Avg. Max Size


Minimum Tank Size

30 gallons


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What is a Three Stripe Damselfish?

The Three Stripe Damselfish, scientifically known as Dascyllus trimaculatus, is a small but captivating fish species belonging to the Pomacentridae family. These fish are native to the tropical waters of the Indo-Pacific region, inhabiting coral reefs and rocky coastlines. With their vibrant colors and distinctive markings, Three Stripe Damselfish are a popular choice for marine aquariums.

Characteristics and Appearance

Three Stripe Damselfish typically grow to a length of around 3 inches. Their bodies are adorned with three distinct black stripes, which run horizontally across their sides. The first stripe extends from the eye to the base of the tail, while the second and third stripes are located behind the pectoral fins. The fish’s body is typically a bright blue or green color, with a yellow or orange tail.

Behavior and Temperament

Three Stripe Damselfish are known for their lively and territorial behavior. They are active swimmers and often engage in playful interactions with other fish in their vicinity. However, they can also be aggressive towards other damselfish species, especially when defending their territory. In an aquarium setting, it’s important to provide them with ample space and hiding places to reduce aggression.

Habitat and Distribution

Three Stripe Damselfish are found in tropical waters throughout the Indo-Pacific region, including the Red Sea, East Africa, and the Pacific Islands. They prefer shallow waters with plenty of coral reefs and rocky structures, which provide them with shelter and protection from predators. These fish are also known to form symbiotic relationships with certain species of anemones, using their stinging tentacles for protection.

Care and Maintenance in an Aquarium

Three Stripe Damselfish are relatively easy to care for in an aquarium setting. They require a tank size of at least 20 gallons, with plenty of live rock and hiding places. The water should be maintained at a temperature between 72-78°F, with a pH of 8.1-8.4. Regular water changes and a stable environment are essential for their well-being.

Diet and Feeding

Three Stripe Damselfish are omnivorous feeders and will readily accept a variety of foods in an aquarium setting. They enjoy eating live and frozen foods, such as brine shrimp, mysis shrimp, and chopped seafood. It’s important to provide them with a balanced diet that includes both meaty and plant-based foods to ensure their nutritional needs are met.

Breeding and Reproduction

Three Stripe Damselfish are known to form monogamous pairs during the breeding season. They typically lay their eggs on a hard surface, such as a rock or piece of coral. The eggs are guarded by both parents until they hatch, which usually takes around 8-10 days. The fry are initially planktonic and feed on microscopic organisms before transitioning to a diet of small invertebrates.

FAQs for Affiliate Marketers

  1. What are some common questions potential customers may have about Three Stripe Damselfish?

    Potential customers may have questions about the fish’s size, temperament, diet, and compatibility with other species. They may also inquire about the ideal tank size and water parameters required for keeping Three Stripe Damselfish in an aquarium.
  2. What are some obstacles that affiliate marketers may face when promoting Three Stripe Damselfish?

    Affiliate marketers may encounter challenges related to competition from other online retailers, limited availability of the fish, or potential customer concerns about the cost of setting up and maintaining a marine aquarium.
  3. What are some reasons to be excited about promoting Three Stripe Damselfish as an affiliate marketer?

    Affiliate marketers can be excited about promoting Three Stripe Damselfish due to the fish’s popularity among marine aquarium enthusiasts, its vibrant colors and unique markings, and its relatively easy care requirements. Additionally, the growing demand for marine aquarium products and accessories presents opportunities for affiliate marketers to generate revenue.


The Three Stripe Damselfish is a captivating and resilient fish species that adds beauty and vitality to marine aquariums. With their vibrant colors, playful behavior, and relatively easy care requirements, these fish are a popular choice among aquarium hobbyists. By understanding their unique characteristics, habitat, and care needs, affiliate marketers can effectively promote Three Stripe Damselfish to potential customers and generate revenue through affiliate programs.