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Clupeiformes (Herrings) >
Engraulidae (Anchovies) > Engraulinae
Etymology: Encrasicholina: Greek, egkrasicholos, -os, -on = mixed with spleen.
Environment: milieu / climate zone / depth range / distribution range
生態学
海. Tropical; 17°N - 4°N, 116°E - 133°E (Ref. 189)
Western Central Pacific: Taiwan, Philippines, Indonesia and Tonga.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 6.2 cm SL オス/雌雄の選別がない; (Ref. 124514)
背面の脊椎 (合計) : 0; 肛門の骨: 0; 臀鰭: 15. This species is distinguished by the following set of characters: unbranched dorsal and anal fin rays 3; branched pectoral-fn rays 11-14 (modally 12); pseudobranchial flaments 16-22 (16); first gill arch with upper limb gill rakers 12-14 (13), lower limb 16-18 (17), total 28-32 (30); second gill arch with upper limb gill rakers 10-11 (10), lower limb 12-17 (16), total 22-27 (27); third gill arch with upper limb gill rakers 8-9 (9), lower limb 10-11 (10), total 18-20 (18); fourth gill arch with upper limb gill rakers 6-8 (7), lower limb 8-9 (8), total 14-16 (19); gill rakers 3-5 (4) on hind face of third gill arch; spine-like scutes on abdomen 3-6 (4); transverse scales 8-9 (9); exposed urohyal bony, without fleshy knobs; head is large, its length 28.3-29.8% (mean 28.9%) of SL; maxilla rather is long, its length 19.0-20.7% (19.9%) of SL, its posterior tip just reaching to anterior margin of preopercle; lower jaw is rather long, its length 19.1-20.5% (19.7%) of SL; orbit is long, its diameter 8.3-8.8% (8.6%) of SL; snout is long, its length 4.9-5.2% (5.1%) of SL; body is elongate, its depth 13.3-15.3% (14.5%) of SL; pelvic fin is short, its length 8.7-9.4% (9.0%) of SL (Ref. 124514).
Presumably schooling, although the three type (and only known) specimens were caught after 20 months of sampling. Evidently rare.
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Spawn in school (Ref. 205).
Hata, H. and H. Motomura, 2021. Redescription of Encrasicholina oligobranchus (Wongratana 1983) (Clupeiformes: Engraulidae) and description of a new species of Encrasicholina from New Guinea. Ichthyol. Res. 68:277-286. (Ref. 124514)
Human uses
水産業: 興味がない
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00253 - 0.01141), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.2 ±0.1 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
