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Encrasicholina oligobranchus, Philippine anchovy
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Encrasicholina oligobranchus
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FAO
Teleostei (teleosts) >
Clupeiformes
(Herrings) >
Engraulidae
(Anchovies) > Engraulinae
Etymology:
Encrasicholina:
Greek, egkrasicholos, -os, -on = mixed with spleen
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; pelagic-neritic. Tropical; 17°N - 4°N, 116°E - 133°E (Ref.
189
)
Western Central Pacific: Taiwan, Philippines, Indonesia and Tonga.
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 6.2 cm SL male/unsexed; (Ref.
124514
)
Dorsal
spines
(total): 0;
Anal
spines
: 0;
Anal
soft rays
: 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
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
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
)
IUCN Red List Status (Ref.
130435
)
Data deficient (DD)
; Date assessed:
28 February 2017
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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Zoological Record
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
).
Trophic level (Ref.
69278
): 3.2 ±0.1 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153
): Low vulnerability (10 of 100).
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- 20 July 2016
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