Bluespot Butterfly

Chaetodon plebeius


(1 Reviews)

Bluespot Butterfly
The Blue Spot Butterfly stands out with its unique silvery-blue hue and peaceful demeanor. Ideal for beginners, it adds a serene beauty to any saltwater setup. A must-have for tranquil tanks.

Bluespot Butterfly

Chaetodon plebeius


(1 Reviews)

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Bluespot Butterfly Care Facts

Care Level: Moderate
Temperament: Peaceful
Diet: Omnivore
Reef Safe: No
Minimum Tank Size: 50 gallons
Max Size: 6 inches
The Bluespot Butterfly (Chaetodon plebeius) is a beautifully colored Butterflyfish, found among the Indo-Pacific ocean. They have a bright yellow body with a blue splotch towards the middle section; along with horizontal stripes and a black stripe acting as a false eye. They are very hardy and peaceful and can be kept with other peaceful fish, but may become aggressive towards other Butterflies with a similar pattern or coloration in smaller tanks.
They are also not reef safe since they will nip at and eat soft corals and stony polyps as well as ornamental shrimp, tube worms and anemones. Diet should include a variety of mysis and vitamin enriched brine shrimp, spirulina, nori, seaweed, marine algae, and algae based foods, 2-3 times daily.


Bluespot Butterflyfish (Chaetodon plebeius): A Captivating Addition to Your Marine Aquarium

Welcome to an informative and comprehensive guide on the Bluespot Butterflyfish, scientifically known as Chaetodon plebeius. In this formal product description, we provide valuable insights for saltwater aquarium enthusiasts, covering various aspects of this captivating marine species. These include its natural habitat, reef compatibility, size, lifespan, dietary requirements in captivity, aquaculture availability, compatibility with other marine species, sexual dimorphism, juvenile to adult coloration changes, temperament, tank requirements, and specific water conditions. Additionally, we list common names for this species and suggest five compatible tankmates while explaining the advantages of acquiring the Bluespot Butterflyfish from Saltwaterfish.com.

Habitat and Natural Range of the Bluespot Butterflyfish

The Bluespot Butterflyfish, Chaetodon plebius, is native to the vast expanse of the Indo-Pacific Ocean. These graceful fish are commonly found in the warm waters of the Indian Ocean, stretching from the eastern coast of Africa to the western Pacific Ocean, including the Red Sea. Bluespot Butterflyfish inhabit coral reefs and lagoons, demonstrating a preference for areas with plentiful coral growth and rocky formations.

Reef Compatibility of the Bluespot Butterflyfish

Bluespot Butterflyfish are typically not considered reef-safe, making them an ideal addition to FOWLR aquariums. Their diet primarily consists of coral polyps and small invertebrates, which means they are likely to harm the corals or inverts in reef tanks. They contribute to the overall balance of your tank system by helping control coral pests like Aiptasia anemones.

Size and Lifespan of the Bluespot Butterflyfish

Mature Bluespot Butterflyfish generally reach sizes of 4 to 6 inches (10 to 15 cm) in captivity. While size can vary among individuals, these fish are known for their striking presence in aquariums. They can have a lifespan of 5 to 8 years with proper care, offering you long-lasting beauty and enjoyment in your marine setup.

What Does the Bluespot Butterflyfish Eat in Captivity

In captivity, Bluespot Butterflyfish require a varied diet to ensure their health and vibrancy. They are omnivorous, primarily feeding on coral polyps, small invertebrates, and algae in their natural habitat. To replicate their diet, provide a mix of:

  • High-quality marine-based pellets
  • Frozen or live foods such as brine shrimp, mysis shrimp, and enriched copepods
  • Marine algae and seaweed sheets

A diverse diet will help maintain their overall health and ensure they receive the nutrients for growth and vitality.

Compatibility of the Bluespot Butterflyfish with Other Fish and Invertebrates

The Bluespot Butterflyfish is known for its peaceful temperament, making it a suitable addition to community aquariums. Here are five compatible tankmates to consider:

  • Clownfish (Amphiprion spp.): Clownfish are visually captivating and exhibit fascinating behaviors.
  • Royal Gramma (Gramma loreto): With their striking purple and yellow coloration, Royal Grammas are visually appealing.
  • Firefish (Nemateleotris spp.): Firefish share a peaceful disposition and add diversity to your aquarium.
  • Cleaner Shrimp (Lysmata spp.): Cleaner shrimp serve a functional purpose while contributing to the aesthetics of your tank.
  • Hawkfish (Cirrhitidae family): Hawkfish, known for their perching behavior, coexist harmoniously with Bluespot Butterflyfish.

Sexual Dimorphism of the Bluespot Butterflyfish

Bluespot Butterflyfish display minimal sexual dimorphism, making it visually challenging to differentiate between males and females. In the aquarium trade, both sexes are typically called "Bluespot Butterflyfish."

Juvenile to Adult Coloration Changes

Juvenile Bluespot Butterflyfish boast striking coloration, featuring a bright yellow body adorned with characteristic blue spots. As they mature into adulthood, their coloration remains vibrant, and the blue spots become a defining feature, lending these fish their name.

Temperament of the Bluespot Butterflyfish

Bluespot Butterflyfish are known for their calm and non-aggressive temperament, making them an excellent choice for community aquariums. They are often observed swimming gracefully in open water or exploring the nooks and crannies of your coral formations, adding elegance and activity to your aquatic landscape.

Tank Requirements for the Bluespot Butterflyfish

To provide an ideal environment for your Bluespot Butterflyfish, consider the following tank requirements:

  • Minimum Aquarium Size: A tank with at least 50 gallons capacity is recommended for a single Bluespot Butterflyfish. Larger tanks can accommodate multiple specimens or other compatible species.

Ideal Water Conditions for the Bluespot Butterflyfish

Maintaining precise water conditions is crucial for the health and well-being of your Bluespot Butterflyfish:

  • pH: Maintain a stable pH between 8.1 and 8.4 to support metabolic functions and overall well-being.
  • Salinity: Ensure a stable salinity level within the range of 1.020 to 1.025, replicating the conditions of their native habitat.
  • Water Temperature: Maintain a consistent water temperature between 75°F and 80°F (24°C to 27°C) to promote comfort and reduce stress.
  • Water Flow: Provide moderate water flow to mimic their natural environment and support water quality.

Other Common Names of the Bluespot Butterflyfish

Apart from being known as the Bluespot Butterflyfish, Chaetodon plebius may also be referred to by common names such as the Yellow-dotted Butterflyfish or the Yellowspotted Butterflyfish.

Why People Should Buy the Bluespot Butterflyfish from Saltwaterfish.com

When considering where to acquire your Bluespot Butterflyfish, Saltwaterfish.com offers several advantages:

  • Healthy Specimens: We prioritize the health and vitality of our marine species, ensuring that your Bluespot Butterflyfish arrives in prime condition.
  • Diverse Selection: Saltwaterfish.com provides a wide range of marine species, allowing you to create a captivating and harmonious aquatic community.
  • Expert Support: Our team of marine experts can assist you at every stage of your aquarium journey, from setup to ongoing care.
  • Sustainability: We advocate for responsible aquarium keeping and support aquaculture practices that reduce the impact on wild populations.
  • Convenience: We deliver your chosen specimens directly to your doorstep, guaranteeing a hassle-free and efficient process.

In conclusion, the Bluespot Butterflyfish, Chaetodon plebius, is an enchanting addition to your saltwater marine aquarium. With their reef-safe nature, peaceful temperament, and striking appearance, these fish contribute to your underwater world's aesthetic appeal and balance. By choosing Saltwaterfish.com, you invest in quality and expertise, ensuring the acquisition of healthy and vibrant Bluespot Butterflyfish that will thrive in your marine setup for years.

This is a great Bluespot Butterfly - Central Pacific who showed up healthy and happy. He was shy at first in my quarantine tank but after moving him over to the main tank he has been quite the showman. Beautiful fish to add to a reef tank.


Reviewed by: James Thompson on Sept. 11, 2021

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