Yellowtail Blue Damsel

Chrysiptera parasema

(22 Reviews)

Yellowtail Blue Damsel
The Yellowtail Blue Damsel, with its captivating deep blue body and contrasting bright yellow tail is a stunning addition to any saltwater aquarium. Known for its hardiness and ease of care, this vibrant fish is an ideal choice for both novice and experienced hobbyists. Its peaceful nature and small size make it a perfect fit for community tanks.

Yellowtail Blue Damsel

Chrysiptera parasema

(22 Reviews)

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Yellowtail Blue Damsel Care Facts

Care Level: Easy
Temperament: Semi-aggressive
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 30 gallons
Max Size: 3 inches

Yellowtail Blue Damselfish

The Yellowtail Blue Damselfish (Chrysiptera parasema), also known as the Yellow Tail Blue Damsel, hails from the Indo-Pacific region, favoring coral-rich habitats and displaying a bright blue body with a neon yellow tail. Reef safe and adaptable to reef aquariums, they thrive in groups of three or more but can become territorial if not introduced last into the tank. With a lifespan of up to five years, they're hardy omnivores, accepting a varied diet. Tank requirements include a minimum size of 30 gallons, stable water parameters, and moderate water flow. A minimum tank size of 30 gallons is suitable for a single Yellowtail Blue Damselfish, and adding 10 gallons for each additional fish is recommended. Stable water parameters, including a pH of 8.1-8.4, salinity between 1.020 and 1.025, and a water temperature of 74°F to 78°F, are crucial. Moderate water flow mimics their natural habitat. Their vibrant coloration intensifies from juvenile to adult stages, making them visually striking additions to well-lit aquariums. Compatible tank mates include Banggai Cardinalfish, Fire Goby, Green Chromis, Yellow Clown Goby, and Royal Gramma. Purchasing from ensures acclimated and sustainably sourced specimens, contributing to both the aquarium's success and marine ecosystem conservation efforts

Habitat and Natural Environment:

Originating from the Indo-Pacific, Yellowtail Blue Damselfish thrive in coral-rich areas within sheltered spots of coral reefs.

Reef Compatibility and Behavior:

Reef safe, they adapt well but can be territorial, especially during breeding. Providing hiding spaces and a balanced fish mix can mitigate aggression.

Size, Lifespan, and Sexual Dimorphism:

Petite, averaging 3 inches, with minimal sexual dimorphism and a lifespan of up to 5 years under proper care.

Diet in Captivity:

As omnivores, the Yellowtail Blue Damselfish will accept marine pellets, flakes, and frozen foods like brine shrimp, ensuring a diverse diet for health and vibrancy.

Aquaculture and Availability:

Prioritizing sustainability, offers aquacultured specimens when available, contributing to conservation efforts. Wild-caught specimens are sustainably collected.

Tank Requirements:

Optimal conditions include a minimum 20-gallon tank for one fish, adding 10 gallons per additional fish. Stable pH (8.1-8.4), salinity (1.020-1.025), and temperature (74-78°F) are crucial, with moderate water flow.

Juvenile to Adult Coloration Changes:

Juveniles display a vibrant yellow tail intensifying with maturity, complementing a striking blue and yellow body in well-lit aquariums.

Common Names:

Also known as Yellowtail Damsel, Blue Damselfish, and Yellowtail Demoiselle.

Compatible Tank Mates:

Notes for New Hobbyists:

The Yellowtail Blue Damselfish should be introduced after establishing a stable tank. Make sure to provide hiding spaces and regular water testing.


Happy Damsel

Reviewed by: Timothy Barbour on June 10, 2024

Very active fish and has a vibrant color

Reviewed by: Andie Gomez on May 29, 2024

Vibrant color. Best when purchased as a group.

Reviewed by: Carrie Smith on April 22, 2024

Reviewed by: Beau Delaporte on April 11, 2024

Great quality

Reviewed by: Morris Charlton on March 27, 2024

Reviewed by: Thomas Bartles on Feb. 26, 2024

Reviewed by: Josh Thomas on Feb. 18, 2024

All were alive and healthy

Reviewed by: Happy Valentines Day Aguirre on Feb. 14, 2024

Arrived healthy

Reviewed by: Thomas Bartles on Feb. 11, 2024

Reviewed by: Anthony Scott on Jan. 31, 2024

Reviewed by: Daniel Small on Jan. 29, 2024

Reviewed by: Sam Macmillan on Jan. 16, 2024

All three I ordered were healthy and beautiful colors.

Reviewed by: Denise Nelson on Dec. 3, 2023

They're beautiful and healthy, their colors pop in my tank. Thank y'all for always standing behind your livestock products

Reviewed by: Eric Wilson on Nov. 19, 2023

Reviewed by: Lynn Adams on Nov. 5, 2023

Reviewed by: Lara Toronto on Sept. 21, 2023

Reviewed by: Brady Caspari on Aug. 8, 2023

Reviewed by: Richard Kenney on July 6, 2023


Reviewed by: Bryan Johnston on March 26, 2022

Great fish if you're looking for a splash of blue. VERY peaceful damselfish. He gets along with all his tank mates, including the Kupang Damselfish I added at the same time. Oftentimes he will swim with my two clowns.

Reviewed by: Barbara on Nov. 28, 2016

These are so cute,, a great addition for any tank. The color is so vibrant, they arrive healthy . Just a little acclamation time and you can enjoy them for years.

Reviewed by: Lou on Aug. 4, 2014

Contrary to popular belief I had had no problems with this damsel..I have heard that they are the meanest lil jerks and can be such pains...But this guy AI have had since start of my tank he has never attacked another fish he is never mean. Hes healthy hardy and been a great community addition!

Reviewed by: Ashley House on May 14, 2012

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