Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser; süßwasser; brackwasser; amphidrom; tiefenbereich 0 - ? m. Subtropical
Northwest Pacific: Honshu, Japan and the northern part of the Yellow Sea south to southern China, including Taiwan. Reports from Ryukyu Islands do not seem to be supported by specimens and may represent misidentifications. However, all of Gushiken's Okinawa photographs (except the one labeled Hyporhamphus intermedius) seem to be correctly identified.
Length at first maturity / Size / Gewicht / Alter
Maturity: Lm ?, range 10 - ? cm
Max length : 20.3 cm TL Männchen/unbestimmt; (Ref. 114983)
Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 13 - 17; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 14 - 19; Wirbelzahl: 47 - 54. Long upper jaw and many vertebrae (47-54) and predorsal scales (48-63). Lower jaw shorter than head length.
Enters estuaries and freshwater. Feeds on zooplankton.
Life cycle and mating behavior
Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven
Collette, B.B. and J. Su, 1986. The halfbeaks (Pisces, Beloniformes, Hemiramphidae) of the Far East. Proc. Acad. Nat. Sci. Philadelphia 138(1):250-301. (Ref. 10943)
IUCN Rote Liste Status (Ref. 130435)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: kommerziell
Tools
Zusatzinformationen
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Internet Quellen
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00186 (0.00120 - 0.00289), b=2.96 (2.83 - 3.09), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±0.45 se; based on food items.
Generation time: 1.6 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (21 of 100).