Saltwater Fish
Lemon Damselfish

Species Description…

Scientific Name: Pomacentrus moluccensis
Common Name: Lemon Damselfish
Species Group: Damselfish
Habitat: Reef Safe with Caution
Care Level: Beginner
Temperament: Semi-aggressive
Diet Type: Omnivore
Role in Aquarium: Community Fish
Max Fish Length: 4 (inches)
Min Aquarium Size: 30 (gallons)
Native Range: Indo-Pacific
Pomacentrus moluccensis - Lemon Damselfish

Pomacentrus moluccensis (Lemon Damselfish)

Overview

  • Native to the Indo-Pacific, commonly found in coral reefs and shallow lagoons.
  • Easily identifiable by its vibrant yellow body and occasionally subtle blue markings around its face and fins.
  • Known for being hardy, active, and moderately territorial; suitable for beginner to intermediate marine hobbyists.
  • Popular due to its striking coloration and resilience in aquarium environments.

Feeding

  • Omnivorous diet; naturally consumes algae, plankton, and small marine invertebrates.
  • Accepts a wide range of aquarium foods including marine flakes, pellets, brine shrimp, mysis shrimp, and spirulina-based diets.
  • Frequent small feedings recommended to maintain health and vibrant coloration.
  • A varied diet ensures nutritional balance and optimal health.

Habitat

  • Suitable for smaller aquariums (minimum 30 gallons) with ample swimming space and structured live rock formations.
  • Stable, mature aquarium conditions crucial for long-term health.
  • Plenty of hiding places and coral structures necessary to mimic natural habitats and reduce stress.
  • Moderate water circulation and effective filtration required to maintain optimal water quality.

Fish Care

  • Ideal water temperature: 74-80°F (23-27°C).
  • Recommended pH level: 8.1-8.4; specific gravity: 1.020-1.025.
  • Hardy but sensitive to rapid changes; consistent monitoring and regular maintenance important.
  • Regular checks for marine diseases and parasites; early intervention ensures continued health.

Compatibility

  • Semi-aggressive; best housed with similar-sized or slightly larger, robust tank mates.
  • Generally reef-safe, but can be territorial towards passive or smaller species.
  • Ideal tank mates include clownfish, dwarf angelfish, tangs, and robust wrasses.
  • Territorial behavior requires careful introductions and adequate aquarium space.

Aquarium Behavior

  • Active swimmer, frequently exploring and defending its territory.
  • May show territorial aggression, especially in smaller aquariums.
  • Often interacts positively with caretakers, especially during feeding times.
  • Providing ample hiding spaces and clearly defined territories helps minimize aggression and stress.