Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino associati a barriera corallina; distribuzione batimetrica 6 - 50 m (Ref. 48637), usually 6 - 15 m (Ref. 27115). Tropical; 22°C - 27°C (Ref. 27115); 36°N - 38°S, 53°E - 133°W
Indo-Pacific: Seychelles and Chagos Islands to the western Pacific.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 12.0 cm SL maschio/sesso non determinato; (Ref. 48637)
Spine dorsali (totale) : 7; Raggi dorsali molli (totale) : 35 - 39; Spine anali: 1; Raggi anali molli: 33 - 37; Vertebre: 26. Pale blue to yellowish; upper abdomen with a broad area of deeper blue; a bar, broad and blackish extending ventrally from eye onto chin; iris yellow, upper and lower edges broadly deep blue; postorbital head with irregular, iridescent markings. A single, continuous dorsal fin with spinous part lower than soft portion. Chin with fleshy protuberance narrowing to a thin low, median fold. Scales very small, fully embedded and well separated. Named as such in reference to its continuous dorsal fin.
Lives in reef habitats from shallow coastal slopes to outer reef lagoons and slopes below drop-offs to 50 meters, among rubble (Ref. 48637). Occurs in pairs and its burrow may be in coral rock or sand. Monogamous (Ref. 52884). Feeds on zooplanktons (Ref. 89972). They tend to form large, though diffuse, colonies; may be due to a propensity to aggregate or may be a result of the ecological requirements for the species (for which type of substratum, current pattern, and water depth among the most important) which restrict the areas of settlement of the postlarvae.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Monogamous mating is observed as both obligate and social (Ref. 52884).
Randall, J.E. and D.F. Hoese, 1985. Revision of the Indo-Pacific dartfishes, genus Ptereleotris (Perciformes: Gobioidei). Indo-Pac. Fish. (7):36 p. (Ref. 528)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Pesca: commerciale; Acquario: Commerciale
Strumenti
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 23.3 - 29.1, mean 28 °C (based on 2128 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.45 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
Nutrients (Ref.
124155): Calcium = 111 [58, 188] mg/100g; Iron = 0.815 [0.492, 1.362] mg/100g; Protein = 18.1 [17.0, 19.1] %; Omega3 = 0.0997 [, ] g/100g; Selenium = 30.1 [14.2, 63.2] μg/100g; VitaminA = 208 [72, 629] μg/100g; Zinc = 1.84 [1.23, 2.60] mg/100g (wet weight);
