Overview

Comprehensive Description

Biology

Forms schools in shallow waters, the juveniles apparently entering the lower parts of rivers, but returning later to the sea. Feeds on both zooplankton (copepods, crab zoea, larvae of bivalves and fish eggs) and phytoplankton. Breeds from October to February (mainly November to January) off western coast of India, usually in relatively shallow inshore waters. Marketed fresh and dried-salted.
  • Whitehead, P.J.P. 1985 FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)   http://www.fishbase.org/references/FBRefSummary.php?id=188&speccode=24 External link.
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Distribution

Indo-West Pacific: northern Indian Ocean (Karachi eastward to Rangoon) to Thailand, Indonesia (Java Sea), the Philippines, Papua New Guinea, and Australia.
  • Whitehead, P.J.P. 1985 FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)   http://www.fishbase.org/references/FBRefSummary.php?id=188&speccode=24 External link.
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Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 13 - 21; Analspines: 0; Analsoft rays: 14 - 19
  • Whitehead, P.J.P. 1985 FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)   http://www.fishbase.org/references/FBRefSummary.php?id=188&speccode=24 External link.
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Size

Max. size

10.0 cm SL (male/unsexed; (Ref. 188)); max. reported age: 1 years (Ref. 43081)
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Diagnostic Description

Belly strongly keeled. The almost rectangular second supra-maxilla and the bright silver stripe along the flank distinguish it from juveniles of Sardinella, Amblygaster and Herklotsichthys. Resembles some pellonulines with a silver stripe, but they lack a first supra-maxilla. Distinguished from E. elongata of the Gulf of Thailand but its deeper body and broader silver stripe.
  • Whitehead, P.J.P. 1985 FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)   http://www.fishbase.org/references/FBRefSummary.php?id=188&speccode=24 External link.
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Ecology

Habitat

Depth range based on 2 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 1 - 2

Graphical representation

Depth range (m): 1 - 2
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Environment

pelagic-neritic; amphidromous (Ref. 51243); freshwater; brackish; marine; depth range 0 - 50 m (Ref. 188)
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Migration

Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).
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Trophic Strategy

Juveniles apparently entering the lower parts of rivers, but returning later to the sea.
  • Whitehead, P.J.P. 1985 FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)   http://www.fishbase.org/references/FBRefSummary.php?id=188&speccode=24 External link.
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Life History and Behavior

Life Expectancy

Lifespan, longevity, and ageing

Observations: Little is known about the longevity of these animals, but they have been known to live at least 1 year (http://www.fishbase.org/). Considering the longevity of similar species, however, maximum longevity could be significantly underestimated.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Escualosa thoracata

The following is a representative barcode sequence, the centroid of all available sequences for this species. 

 
There are 6 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
 
FSCS258-06|FSCS 10-z-1|Escualosa thoracata| ------------------------------------------CTTTATTTAGTATTTGGGGCCTGAGCAGGAATAGCGGGCACAGCTTTA---AGTTTACTAATTCGGGCAGAACTTAGCCAACCCGGAGCTCTCCTTGGTGAC---GATCAAATTTATAATGTAATCGTTACCGCGCATGCTTTCGTAATAATCTTCTTTATAGTAATACCAATGTTAATTGGAGGCTTTGGAAACTGATTGGTGCCACTCATA---CTTGGTGCACCAGACATAGCATTCCCTCGAATAAATAATATAAGCTTCTGACTTCTCCCCCCCTCATTCCTCCTTCTCTTAGCCTCTTCTGGAGTAGAGGCTGGAGTAGGGACAGGATGGACAGTATATCCCCCTTTAGCAGGAAACCTTGCCCATGCAGGAGCATCTGTAGATTTA---GCTATCTTTTCACTTCACTTAGCAGGAATCTCATCAATCCTCGGGGCTATTAACTTCATCACTACTATTATCAATATGAAACCCCCTGCGATCTCACAATATCAAACACCTTTATTCGTCTGAGCTGTATTAGTTACAGCAGTACTTCTCCTACTCTCCCTCCCAGTTCTAGCTGCT---GGGATCACAATACTCCTTACAGACCGAAACTTAAATACTACGTTCTTTGACCCGGCAGGAGGGGGAGACCCTATCTTATATCAACATCTA------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 
-- end --

Download FASTA File
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Statistics of barcoding coverage: Escualosa thoracata

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Species: 6
Species With Barcodes: 1

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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
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