Spot Tail Dartfish

Ptereleotris heteroptera

(1 Reviews)

Spot Tail Dartfish

Spot Tail Dartfish

Ptereleotris heteroptera

(1 Reviews)

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Spot Tail Dartfish Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Carnivore
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 5 inches
The Spot Tail Dartfish, Ptereleotris heteroptera, is entirely blue with one black spot on the tail. They are very peaceful and can be housed with other peaceful fish in a reef tank setting, but may become territorial towards other blennies, gobies or dartfish in smaller tanks.

Dartfish tend to stay mainly towards the bottom of the tank, burrowing and sifting through the sand. However, they are also known for jumping, so a tight fitting lid is suggested. Diet should include a variety of frozen or live mysis shrimp and vitamin enriched brine shrimp 1-2 times daily. 

The Spot Tail Dartfish (Ptereleotris heteroptera) - Elevate Your Marine Aquarium Experience

Habitat of the Spot Tail Dartfish:

Spot Tail Dartfish are commonly found in the Indo-Pacific region, inhabiting sandy bottoms of lagoons and reef flats. They prefer areas with moderate water flow and ample hiding spots among rocks and coral.

Reef Safe Nature of the Spot Tail Dartfish:

This species is considered reef-safe, making it suitable for aquariums with coral and other invertebrates. However, providing them with hiding places to reduce stress is essential.

Size and Lifespan of the Spot Tail Dartfish:

Spot Tail Dartfish typically reach a size of 4 to 5 inches in captivity. They can live up to 5 years or more with proper care, providing enthusiasts with a long-term commitment.

Diet in Captivity for the Spot Tail Dartfish:

These dartfish are carnivores, and their diet should consist of various meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood. Offering a well-rounded diet helps ensure their health and vibrant coloration.

Aquaculture Availability of the Spot Tail Dartfish:

As of the latest information available, Spot Tail Dartfish are successfully aquacultured, contributing to sustainable practices in the aquarium hobby. This availability enhances their accessibility to hobbyists and reduces the impact on wild populations.

Compatibility with Other Marine Life:

Spot Tail Dartfish are known for their peaceful nature, making them compatible with various tank mates. However, caution should be exercised when introducing them to aggressive or larger species.

Sexual Dimorphism in the Spot Tail Dartfish:

Sexual dimorphism in Spot Tail Dartfish is minimal, with males and females displaying similar physical characteristics.

Juvenile to Adult Coloration Changes in the Spot Tail Dartfish:

Juveniles exhibit a striking yellow coloration with distinct black markings, while adults develop a more subdued yellowish-brown hue. This transition adds visual interest to the aquarium over time.

Temperament of the Spot Tail Dartfish:

Spot Tail Dartfish are known for their calm and non-aggressive demeanor, making them an excellent choice for community aquariums. Their peaceful nature contributes to a harmonious tank environment.

Tank Requirements for the Spot Tail Dartfish:

  • A minimum aquarium size of 30 gallons is recommended for keeping Spot Tail Dartfish.
  • The tank should have a sandy burrowing substrate and live rock structures providing hiding spots.
  • Moderate water flow and proper filtration are essential for maintaining water quality.

Water Conditions for the Spot Tail Dartfish:

  • Maintaining specific water conditions is crucial for the well-being of Spot Tail Dartfish.
  • Recommended parameters include a pH level between 8.1 and 8.4, salinity ranging from 1.020 to 1.025.
  • Water temperature between 72°F and 78°F, and moderate water flow.

Other Common Names of the Spot Tail Dartfish:

Spot Tail Dartfish may also be known by the names Pajama Cardinalfish or Fire Dartfish.

Five Compatible Tank Mates for the Spot Tail Dartfish:

Why Choose Spot Tail Dartfish from is renowned for its commitment to providing high-quality marine life to enthusiasts. When you choose Spot Tail Dartfish from, you can expect healthy and vibrant specimens backed by the expertise of a trusted source. With a focus on sustainable practices, ensures that your aquatic hobby thrives while contributing to the conservation of marine ecosystems.

In conclusion, the Spot Tail Dartfish is a captivating addition to saltwater marine aquariums, offering a combination of beauty and ease of care. With the right environment and attention to their specific needs, enthusiasts can enjoy the presence of these delightful dartfish in their home aquariums.

Spot Tail Dartfish Great addition to 28g Biocube reef tank. Very healthy and active. Add great color to coral tank.

Reviewed by: Les Milston on Sept. 12, 2021

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