Description
Allen’s Damsel – Pomacentrus alleni
Overview:
Allen’s Damsel is a vibrant and hardy reef fish, featuring a brilliant blue body with yellow accents on the fins. Its energetic swimming and striking coloration make it a captivating addition to any marine aquarium.
Origin:
Native to the Indo-Pacific, typically found around coral reefs and lagoons.
Feeding:
Omnivorous – thrives on flakes, pellets, frozen mysis, brine shrimp, and finely chopped seafood. A varied diet supports vibrant coloration and overall health.
Tank Mates:
Best kept with semi-aggressive or similarly sized fish. Reef-safe with corals and invertebrates, but may defend its territory in smaller tanks.
Aggression:
Semi-aggressive – territorial behavior is common, especially in smaller aquariums, but manageable with ample space and hiding spots.
Experience Level:
Beginner-friendly, due to its hardiness and adaptability, though consideration of tankmate compatibility is recommended.
Water Parameters:
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Temperature: 74–80°F (23–27°C)
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pH: 8.1–8.4
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Salinity: 1.020–1.025
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Minimum Tank Size: 30+ gallons
The Allen’s Damsel is a colorful, resilient, and lively reef fish, perfect for aquarists looking to add both activity and visual appeal to a marine aquarium.




