Damselfish Miller

  • Miller’s Damselfish (Pomacentrus milleri) is a small but vibrant saltwater fish, known for its striking blue and yellow coloration.
  • Miller’s Damselfish thrives in water temperatures between 75°F and 80°F, with a salinity level between 1.020 to 1.025 specific gravity and a pH range of 8.1 to 8.4.
  • They usually grow up to about 2.5 to 3 inches and are generally territorial, especially in smaller tanks, where they may show aggression towards other fish.
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SKU: 8600

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Introduction: Introducing the Miller’s Damselfish (Pomacentrus milleri), a stunning marine species admired for its brilliant blue to yellowish coloration. Native to the tropical waters of the Pacific Ocean, this fish is a favorite among saltwater aquarists for its beauty, hardiness, and bold nature. Known for being more aggressive than some other damselfish species, Miller’s Damselfish thrives in well-structured reef aquariums.

Scientific Name: Pomacentrus milleri

Water Quality and Temperature: To ensure the health and vibrancy of your Miller’s Damselfish, maintain the following water parameters:

  • Temperature: Keep the water temperature between 75°F to 80°F (24°C to 27°C), mimicking the warm tropical reefs they inhabit.
  • pH Level: Maintain a pH level between 8.1 and 8.4 for the ideal slightly alkaline environment.
  • Salinity: The specific gravity should be between 1.020 and 1.025 to reflect typical marine conditions.
  • KH Level: Maintain a carbonate hardness (KH) of 8 to 12 dKH to ensure stable water chemistry.

Feeding: Miller’s Damselfish is an omnivorous species that benefits from a varied diet. Provide the following:

  • Pellets or Flake Food: High-quality marine pellets or flake food designed for omnivorous fish.
  • Live or Frozen Foods: Supplement with brine shrimp, mysis shrimp, and copepods for a protein boost.
  • Vegetable Matter: Algae sheets or spirulina-based foods should be offered to meet their herbivorous needs.

Tank Mates: Miller’s Damselfish are semi-aggressive, especially as they mature. In smaller tanks, they can become territorial, particularly towards fish of similar size. Suitable tank mates include more robust species like clownfish, wrasses, and other semi-aggressive reef fish. Avoid housing them with smaller or more peaceful species that may be bullied. It’s also best to avoid other damselfish species unless in a large, well-structured tank where territories can be established.

Substrates and Tank Decorations: A sandy substrate combined with plenty of live rock and coral structures is ideal for Miller’s Damselfish. The rockwork provides ample hiding places and establishes territories, which help reduce aggression. Live rock also offers surfaces for grazing on natural algae and helps create a natural reef environment that mimics their wild habitat.

Suitable Plants: While Miller’s Damselfish do not interact directly with plants, incorporating macroalgae like Caulerpa or Chaetomorpha into the aquarium can enhance the aesthetics and provide additional grazing opportunities.

Sexing: Sexing Miller’s Damselfish can be difficult, as males and females are nearly identical in appearance. Males may show more vibrant coloration during breeding, but there are no clear external differences for sex determination under normal conditions.

Breeding: Breeding Miller’s Damselfish in captivity is possible, though it can be challenging. They are substrate spawners, meaning they lay eggs on flat surfaces, such as rocks or aquarium decorations. The male typically guards and cares for the eggs until they hatch. To encourage breeding, provide a stable, well-maintained environment with plenty of rock surfaces, and ensure the fish are well-fed and healthy.

Maximum Size and Longevity: Miller’s Damselfish typically grows to about 2.5 to 3 inches (6 to 8 cm) in length. With proper care, they can live for up to 5 to 7 years in a home aquarium.

General Information: The Miller’s Damselfish is a lively and visually appealing addition to saltwater tanks. Their striking coloration and active swimming make them stand out, but their territorial nature means they do best in larger tanks with well-defined spaces. Though small, they bring a lot of personality and color to any marine setup.

A Fun Fact: Despite their small size, Miller’s Damselfish are known for their bold and territorial behavior. They will often defend their chosen rock or coral formation vigorously, even against larger fish, making them a fascinating species to observe in a reef environment.

Family

Pomacentridae

Origin

Western Pacific Ocean

Social

Semi-Aggressive

,

Territorial

Breeding

Egglayer

Care Level

Beginner

,

Intermediate

pH Level Aquarium pH measures water acidity/alkalinity. 7 is neutral. Fish have pH preferences; maintain ideal levels for their health and stability.

8.1 – 8.4

GH Level GH (General Hardness) in aquariums measures minerals like calcium and magnesium. It affects fish health by showing water\'s mineral content.

8 – 12 dGH

KH Level KH (Carbonate Hardness) in an aquarium stabilizes pH. It acts like a shield, keeping the water conditions just right for fish.

8 – 12 dKH

Temperature Ideal temperature needed for fish

24°C – 27°C

Life Span

5 – 7 Years

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