Environment: milieu / Klimaatzone / Diepte / distribution range
Ecologie
; zoet water; brak water pelagic-neritic; amfidroom (Ref. 51243). Tropical; 25°C - 30°C (Ref. 1672)
Asia and Oceania: India eastward to the Philippines, and south to Indonesia, Vanuatu, Solomon Islands, Papua New Guinea, and northern Australia.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 30.0 cm TL mannelijk / geslacht onbekend; (Ref. 4833); common length : 20.0 cm TL mannelijk / geslacht onbekend; (Ref. 4833)
Dorsale stekels (totaal) : 4; Dorsale zachte stralen (totaal) : 11 - 13; Anale stekels: 3; Anale zachte stralen: 15 - 17.
Body shape (shape guide): short and / or deep.
Occurs primarily in brackish mangrove estuaries, but also penetrates rivers and small streams (Ref. 4833, 44894). Reported to occur near overhanging vegetation on reefs (Ref. 9710, 48636). Usually in small aggregations (Ref. 48635). Feeds at the surface during daytime on floating debris which includes insects and vegetable matter. It is renowned for its ability to 'shoot down' insect prey by expelling beads of water from its mouth with considerable force and for its remarkable ability to compensate for visual refraction when aiming its shoots; shooting range is about 150 cm (Ref. 2847, 55339). Sold fresh in markets.
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Allen, G.R., 1991. Field guide to the freshwater fishes of New Guinea. Publication, no. 9. 268 p. Christensen Research Institute, Madang, Papua New Guinea. (Ref. 2847)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-1)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van minder commercieel belang; Aquarium: Commercieel
Tools
Speciale rapporten
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.00640 - 0.04301), b=3.00 (2.77 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 2.6 ±0.27 se; based on food items.
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
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