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Three-Spot Damselfish (Dascyllus trimaculatus)

Find Three-Spot Damselfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Three-Spot Damselfish
Photo: Diego Delso · CC BY-SA 4.0
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Where to buy Three-Spot Damselfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Three-Spot Damselfish

A small, stocky damselfish with a dark blue-black body and three distinctive white spots—one on the head and two on the dorsal region. The fins are dark with the dorsal and anal fins edged in blue. The body is compressed laterally and the overall appearance is robust.

Key facts

Origin
Indo-Pacific from the Red Sea and East Africa to the Great Barrier Reef, Micronesia, and Polynesia, typically found in coral reef environments at depths of 5-40 meters.
Common Health Issues
Ich, velvet, head and lateral line erosion (HLLE)
Aka
Threespot Dascyllus, Three-Spot Dascyllus
Care Requirements
• Minimum 30 gallon tank • Maintain temperature range of 72–82°F • Keep salinity stable at 1.020–1.025 specific gravity • Highly aggressive and territorial; keep singly or in groups only in large tanks with multiple hiding spots; will harass peaceful fish • Provide ample live rock and crevices for shelter and to establish territories • While generally reef-safe, monitor behavior around small ornamental crustaceans and polyps that may be nipped
Care Level
Easy
Max Size
5.5
Min tank size
30 gallons
Feeding Schedule
1-2 times daily
Diet Details
Feed a varied diet of high-quality flake food, small pellets, and frozen foods such as mysis shrimp, brine shrimp, and chopped vegetables. Feed 1-2 times daily in established aquaria.
Diet
omnivore
Difficulty Level
Easy - Suitable for beginners with basic care requirements and hardy nature.
Temperament
Aggressive

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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