Overview

Comprehensive Description

Biology

Occurs in rivers, apparently not entering sea. More specimens and data needed.
  • 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

Range Description

This species occurs in the Amazon River basin, in Brazil, Colombia and Peru. Widely distributed, though not common.
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Amazon River basin: Brazil, Colombia and Peru.
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South America: Amazon River basin (Pará and Manáos [= Manaus] to Iquitos, Peru).
  • 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; Analspines: 0; Analsoft rays: 47 - 52
  • 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

Maximum size: 173 mm ---
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Max. size

17.3 cm SL (male/unsexed; (Ref. 188))
  • 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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Diagnostic Description

Body moderately elongate, belly with 25 or 26 scutes. Eye large, lower jaw projecting; gap between hind tip of pre-maxilla and blade of maxilla a ligament, not a toothed bone. Dorsal fin origin well before midpoint of body; anal fin long. Resembles species of Pellonula, which have a distinct toothed hypo-maxilla between the hind tip of the pre-maxilla and the blade of maxilla (Ref. 188). Grayish above, yellowish to silvery below (Ref. 37032).
  • 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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Type Information

Holotype for Ilisha amazonica
Catalog Number: USNM 52550
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Radiograph; Illustration
Collector(s): J. Steere
Year Collected: 1901
Locality: Amazon R., Para To Manaos, Brazil, Brazil, South America
  • Holotype: Hildebrand, S. F. 28 July 1948. Smithsonian Miscellaneous Collections. 110 (9): 3, fig. 2.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
I. amazonica is a pelagic (area of water not near the bottom) species that occurs in large river channels.

Systems
  • Freshwater
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Environment

pelagic; freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
Reis, R & Lima, F.

Reviewer/s
Collen, B., Darwall, W., Ram, M. & Smith, K. (SRLI Freshwater Fish Evaluation Workshop)

Contributor/s

Justification
Assessed as Least Concern due to its extremely large distribution and the lack of any known major widespread threats.
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Population

Population
Not a particularly abundant species.

Population Trend
Stable
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Threats

Major Threats
The species has been found for sale in markets, although the extent of harvesting is not known. Other threats are also not known.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no conservation measures in place.
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