Lemon Damselfish

Physical Characteristics

Oval-shaped, deep body with a vibrant uniform yellow coloration across the entire body and fins. It features 13-14 dorsal spines and a small black spot often located at the upper base of the pectoral fin. The eyes are relatively large for its body size.

Habitat & Distribution

Inhabits coral-rich areas of lagoons and seaward reefs, typically at depths between 1 to 30 meters. Distributed throughout the Western Pacific, ranging from the Ryukyu Islands to Australia and the Melanesian islands.

Size & Weight

Reaches a maximum total length of approximately 9 centimeters (3.5 inches). Weight is negligible, typically under 50 grams.

Similar Looking Species

Similar to the Ambon Damselfish (Pomacentrus amboinensis), which can be distinguished by a small dark spot on the posterior base of the dorsal fin, and the Golden Damselfish (Amblyglyphidodon aureus), which lacks the black spot at the pectoral fin base and has a more elongated body.

Ecological Role

Functions as a lower-level consumer, feeding primarily on benthic algae and zooplankton. It often seeks refuge among the branches of Acropora corals. Conservation status is currently 'Least Concern' on the IUCN Red List.

Identified on: 1/17/2026

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