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Overview

Comprehensive Description

Biology

Occurs in inshore waters around islands. Biology unknown. May be foraged by larger commercial species. Dried for pet food.
  • Ivantsoff, W. and L.E.L.M. Crowley 1999 Atherinidae. Silversides (or hardyheads). p. 2113-2139. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome. (Ref. 9760)
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Distribution

Range Description

Hypoatherina crenolepis is known only from Mindoro Strait (off Tara Island, northern Palawan) and southern Sulu Sea (off Papatog islands in Tawi-tawi).
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Western Pacific.
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Western Pacific: Tara and Papatog islands, Philippines.
  • Ivantsoff, W. and L.E.L.M. Crowley 1999 Atherinidae. Silversides (or hardyheads). p. 2113-2139. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome. (Ref. 9760)
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Physical Description

Morphology

Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 7 - 9; Analspines: 1; Analsoft rays: 9 - 10
  • Ivantsoff, W. and L.E.L.M. Crowley 1999 Atherinidae. Silversides (or hardyheads). p. 2113-2139. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome. (Ref. 9760)
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Size

Max. size

6.5 cm TL (male/unsexed; (Ref. 90102))
  • Allen, G.R. and M.V. Erdmann 2012 Reef fishes of the East Indies. Perth, Australia: Universitiy of Hawai'i Press, Volumes I-III. Tropical Reef Research. (Ref. 90102)
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Maximum size: 57 mm TL
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Diagnostic Description

A few minute teeth present on vomer, mesopterygoid but none on palatines. Ascending dorsal process of premaxilla short, broad and not entering interorbital space. Body scales with very crenulated posterior edge. Midlateral scale count 33 to 35. Origin of first dorsal from 0.5 to 3 scales in front of vertical through tips of ventrals. Pectoral fin 3.4-3.9 in SL.Description: Characterized by very large eye, 2.3-2.4 in head length; pectoral fins longer than other Hypoatherina, 3.4-3.9 in SL; ramus of dentary highly elevated posteriorly (Ref 90102).
  • Ivantsoff, W. and L.E.L.M. Crowley 1999 Atherinidae. Silversides (or hardyheads). p. 2113-2139. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome. (Ref. 9760)
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Type Information

Paratype for Allanetta crenolepis Schultz
Catalog Number: USNM 136803
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Glycerin with Bone Stain
Year Collected: 1908
Locality: Tara Island; Mindoro Strait, Tara Island, Palawan Island, Palawan, Philippines, Philippine Archipelago, Mindoro Strait, Pacific
Vessel: Albatross
  • Paratype: Schultz, L. P. 1953. Bulletin of the United States National Museum. No. 202: 302, fig. 46.
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Holotype for Allanetta crenolepis Schultz
Catalog Number: USNM 143304
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Illustration
Year Collected: 1908
Locality: Tara Island; Mindoro Strait, Tara Island, Palawan Island, Palawan, Philippines, Philippine Archipelago, Mindoro Strait, Pacific
Vessel: Albatross
  • Holotype: Schultz, L. P. 1953. Bulletin of the United States National Museum. No. 202: 302, fig. 46.
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Paratype for Allanetta crenolepis Schultz
Catalog Number: USNM 138065
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1908
Locality: Philippines: Tawi Tawi, Papatog?, Philippines, Pacific
Vessel: Albatross
  • Paratype: Schultz, L. P. 1953. Bulletin of the United States National Museum. No. 202: 302, fig. 46.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Crenulated Silversides are pelagic-neritic, inhabiting close inshore waters around islands (Ivantsoff and Crowley 1999). They may be taken as forage fish by larger commercial species (Froese and Pauly 2008). Maximum size from collected specimens is 5.7 cm (TL) (Ivantsoff and Crowley 1999).

Systems
  • Marine
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Environment

pelagic-neritic; marine
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Casten, L.R. & Alava, M.N.

Reviewer/s
Polidoro, B., Comeros-Raynal, M. & Carpenter, K.E.

Contributor/s

Justification
Hypoatherina crenolepis is a rare species known only from two localities off Tara and Papatog islands, southwestern Mindanao. Threats to this fish are unknown, except probably from habitat destruction affecting most Atherinids. However, there are not enough data on the population's status as the only known records for this species are from the 1908 collection. It is therefore listed as Data Deficient. The type localities should be revisited to validate and improve information on the population, habitat and ecology of the species. Conservation actions for the species should include catch monitoring and regulation.
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Population

Population
Hypoatherina crenolepis is known only from the type specimens collected in 1908 off Tara and Papatog islands in Tawi-tawi, southwestern Mindanao (Schultz 1953). There is no population trend information available for this species.

Population Trend
Unknown
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Threats

Major Threats
Major threats to this species may come from habitat degradation or destruction. It is not targeted and is not of any commercial importance.
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Data deficient (DD)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
There are no species-specific conservation measures in place for this species.
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Relevance to Humans and Ecosystems

Benefits

Importance

bait: occasionally
  • Ivantsoff, W. and L.E.L.M. Crowley 1999 Atherinidae. Silversides (or hardyheads). p. 2113-2139. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome. (Ref. 9760)
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