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Allen's Damselfish (Pomacentrus alleni)

Find Allen's 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.

Allen's Damselfish
Photo: (c) Gerald R. Allen, some rights reserved (CC BY) · CC BY
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Where to buy Allen's 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 Allen's Damselfish

Allen's Damselfish displays a striking bright yellow body with electric blue accents on the head and dorsal fin. The species has a compact, robust damselfish body shape with a pointed snout and typically reaches 3-3.5 inches in length.

Key facts

Min tank size
20 gallons
Temperament
Semi Aggressive
Appearance
Allen's Damselfish displays a striking bright yellow body with electric blue accents on the head and dorsal fin. The species has a compact, robust damselfish body shape with a pointed snout and typically reaches 3-3.5 inches in length.
Reef safety
Reef Safe with Caution
Care Level
Moderate
Feeding Schedule
2-3 times daily
Family
Pomacentridae
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Care Requirements
• Minimum 20-gallon tank, larger for multiple specimens • Stable water parameters: 72-78°F, pH 8.1-8.3, sg 1.020-1.025 • Moderate to strong water flow and varied rockwork for territory • Omnivorous diet: quality flakes, pellets, small frozen foods • Can be territorial; monitor with smaller peaceful fish
Diet Details
In captivity, feed a varied diet of high-quality flake food, pellets, and small frozen foods such as mysis shrimp, brine shrimp, and finely chopped seafood. Offer 2-3 times daily in small portions they can consume quickly.
Max Size
3.5

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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