Alleni Damselfish

Alleni Damselfish (Pomacentrus alleni)

Description:

• Also known as the Neon Damselfish or Allen’s Damselfish.

• Displays a brilliant electric blue body with a subtle golden-yellow underside, making it a standout in marine aquariums.

• Hardy, active, and full of personality – a favourite among both beginners and experienced aquarists.

Care Requirements:

• Care Level: Easy

• Temperament: Semi-aggressive – less aggressive than many other damselfish but can still be territorial.

• Size: ~6–7 cm

• Diet: Omnivore – accepts flakes, pellets, frozen mysis/brine shrimp, and algae-based foods.

Aquarium Requirements:

• Minimum Tank Size: 80 litres

• Water Parameters:

  • Temperature: 24–27°C

  • pH: 8.1–8.4

  • Salinity: 1.020–1.025 SG

• Setup: Provide live rock for hiding and territory along with open swimming areas.

Compatibility:

• More community-friendly than many damselfish.

• Suitable with clownfish, gobies, wrasses, tangs, and other semi-aggressive tankmates.

• Best kept singly unless in a large tank where territories can be spread out.

Notes:

• Extremely hardy and adaptable – great choice for beginners.

• Colours remain vivid with good diet and stable water conditions.

• Active swimmer that adds constant movement and brightness to the aquarium.