Electric Blue Damsel

Pomacentrus coelestis


(2 Reviews)

Electric Blue Damsel

Electric Blue Damsel

Pomacentrus coelestis


(2 Reviews)

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Care Facts

Care Level: Easy
Temperament: Semi-Aggressive
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 20 gallons
Max Size: 3 inches
The Electric Blue Damsel, Pomacentrus coelestis, also known as the Neon Damsel, is a very popular fish for the home aquarium. They are excellent choices because they are hardy, small in size, vibrant, active, and easy to care for. They are best housed in tanks of at least 20 gallons with plenty of live rock - caution should be had when housing with other damsels of the same or other species. The Electric Blue Damsel eats a varied diet of frozen meaty and herbivorous foods. 


Electric Blue Damsel - Pomacentrus coelestis, Care Guide For Your Saltwater Aquarium

The Electric Blue Damsel (Pomacentrus coelestis) is popular among saltwater aquarium enthusiasts due to its vibrant coloration and hardy nature. This small marine fish is native to the Indo-Pacific region, including the Great Barrier Reef, and has become a sought-after addition to saltwater aquariums around the world.

Habitat of the Electric Blue Damsel

Electric Blue Damsels inhabit coral reefs and shallow lagoons in the wild, seeking refuge among the coral branches. They prefer areas with plenty of hiding spots and thrive in live rock formations.

Is the Electric Blue Damsel Reef Safe?

The Electric Blue Damsel is generally considered reef-safe, making it a suitable choice for reef aquariums. However, caution should be exercised when keeping them with small, delicate invertebrates, as they may occasionally display territorial behavior.

Size and Lifespan of the Electric Blue Damsel

These damselfish typically reach a maximum size of around 3 inches (7.5 cm). In captivity, with proper care, they can live for up to 5 years or more.

Diet in Captivity of the Electric Blue Damsel

Electric Blue Damsels are omnivores, and in captivity, they accept a varied diet. A well-balanced diet should include high-quality flakes, pellets, and frozen or live foods such as brine and mysis shrimp.

Aquaculture and Availability of the Electric Blue Damsel

Electric Blue Damsels are commonly aquacultured, making them readily available to hobbyists. Aquacultured specimens are preferable as they tend to be more adaptable to captive conditions.

Compatibility of the Electric Blue Damsel with Other Fish and Invertebrates:

These damselfish have a reputation for being somewhat aggressive, especially towards conspecifics (members of the same species). When considering tank mates, choosing species that can withstand their assertive behavior is essential. Compatible tank mates may include the Firefish Goby (Nemateleotris magnifica), Clownfish (Amphiprion spp.), and Chromis species.

Sexual Dimorphism of the Electric Blue Damsel

Electric Blue Damsels do not exhibit significant sexual dimorphism, making it challenging to distinguish between males and females visually.

Juvenile to Adult Coloration Changes in the Electric Blue Damsel

Juvenile Electric Blue Damsels exhibit a bright blue coloration, intensifying as they mature. Their bodies may display a deeper blue hue with a yellow tail as they reach adulthood.

Temperament of the Electric Blue Damsel

Known for their territorial nature, Electric Blue Damsels may assert themselves in the aquarium. Providing ample hiding spaces and introducing them to the tank last when establishing a community can help minimize aggression.

Tank Requirements of the Electric Blue Damsel

  • Minimum tank size: 20 gallons for a single Electric Blue Damsel.
  • If keeping a group, a larger tank with plenty of hiding spots and territories is essential to reduce aggression.
  • Live rock formations should be incorporated to mimic their natural habitat.

Water Conditions for the Electric Blue Damsel

  • pH: 8.1 to 8.4
  • Salinity: 1.020 to 1.025
  • Water Temperature: 74°F to 78°F (23°C to 26°C)
  • Water Flow: Moderate to high flow is ideal, simulating the water movement in their natural reef habitat.

Other Common Names for the Electric Blue Damsel

  • Electric Blue Damsels are known by various common names, including Blue Devil Damselfish and Neon Damselfish.

Five Compatible Tank Mates for the Electric Blue Damsel

Why Purchase from Saltwaterfish.com:

Saltwaterfish.com is a reputable online retailer committed to providing healthy and sustainably sourced marine life. When you purchase Electric Blue Damsels from Saltwaterfish.com, you can trust that you are receiving quality specimens that have been carefully handled and are well-suited for aquarium life.

In conclusion, the Electric Blue Damsel is an attractive and durable species suitable for saltwater aquariums. It allows enthusiasts to enjoy the beauty of the Indo-Pacific reefs in the comfort of their homes. With proper care and consideration of tank mates, these damselfish can thrive, adding a splash of color and activity to any marine setup.


Reviewed by: Marty Costello on Nov. 15, 2023

I bought this Electric Blue Damsel here and to show you how hardy this guy is, he was the most active of 5 fish I had delivered when outside temp in MN was 21 degree out and bag water was at 68 degrees. All survived after 2 1/2 hr slow drip acclimation. He is a colorful little guy to watch darting around the tank. He is constantly on the move searching for food or detritus on the bottom as well as on reef rock. Likes to dart in and out of rock. He is getting much better at snagging Mysis shrimp I drop in before the other 6 fish hog it all, especially my Hamlet Indigo who gobbles everything that moves. A joy to watch.


Reviewed by: Philip Brock on Sept. 11, 2021

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