Reef Leapers
A slender, colorful dartfish that pairs for life and darts into holes when alarmed.
The elegant firefish (Nemateleotris decora) is a species of dartfish native to tropical waters in the Indo-West Pacific, from Mauritius to Samoa, north to Ryukyu Islands, and south to New Caledonia. It is found over hard, open bottoms of reefs, sandy patches and rubble, as well as deeper coastal outer reef drop-offs where there are strong currents, at depths ranging between 25 and 70 m (82 and 230 ft). It reaches a maximum length of 9 cm (3 in). This species is often found in pairs and is monogamous. They feed on zooplankton, especially the larvae of copepods and crustaceans. They will dart into holes when alarmed.
Quick Facts
- Classification
- Dartfish
- Habitat
- Tropical waters in the Indo-West Pacific, from Mauritius to Samoa, north to Ryuk
- Diet
- Zooplankton, especially the larvae of copepods and crustaceans
- Unique trait
- Monogamous, often found in pairs; prolific leapers in aquariums
Lore & Background
The elegant firefish is a slender, colourful fish. The dorsal fin has 7 spines and 27 to 32 soft rays while the anal fin has a single spine and 28 to 31 soft rays. The head is purple and the body colour is whitish or yellowish, gradually darkening to deep grey towards the tail. The fins have longitudinal bands of purple, red, black and orange. Populations from the western Indian Ocean have been recognised by some workers as a distinct species, Nemateleotris exquisita, however, the validity of this taxon needs more taxonomic research.
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