Overview

Comprehensive Description

Biology

Relatively common in both high island and atoll lagoons (Ref. 1602). They are not found in the rougher waters over reefs and are attracted to light at night in lagoons (Ref. 9760). Used as bait in the tuna fishery (Ref. 6822).
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Distribution

Western Central Pacific: Sumatra to northern Cooks, north to the Philippines, Carolines and Marshall Islands, south to Fiji.
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Western Pacific.
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Physical Description

Morphology

Dorsal spines (total): 5 - 7; Dorsal soft rays (total): 9 - 10; Analspines: 1; Analsoft rays: 7 - 10
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Size

Maximum size: 70 mm SL
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Max. size

7.8 cm SL (male/unsexed; (Ref. 54980))
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Diagnostic Description

Premaxilla with long ascending process and two lateral processes. Gill rakers 22-25. Midlateral scale count 38-42.
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Type Information

Paratype for Atherina ovalaua
Catalog Number: USNM 142911
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1929
Locality: Fiji Islands, Viti Levu Island, Suva Harbor, Viti Levu Group, Fiji, Fiji Islands, Pacific
  • Paratype:
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Paratype for Atherina ovalaua
Catalog Number: USNM 142910
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1929
Locality: Fiji Islands, Ovalau Island, Ovalau Island, Lomaiviti Islands, Fiji, Fiji Islands, Pacific
  • Paratype:
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Paratype for Atherina ovalaua
Catalog Number: USNM 117318
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1929
Locality: Ovalau Island: Fiji, Ovalau Island, Lomaiviti Islands, Fiji, Fiji Islands, Pacific
  • Paratype:
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Paratype for Atherina ovalaua
Catalog Number: USNM 117319
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1929
Locality: Ovalau Island: Fiji, Ovalau Island, Lomaiviti Islands, Fiji, Fiji Islands, Pacific
  • Paratype:
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Ecology

Habitat

Environment

reef-associated; marine; depth range 0 - 5 m (Ref. 57178)
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Depth range based on 49 specimens in 1 taxon.
Water temperature and chemistry ranges based on 45 samples.

Environmental ranges
  Depth range (m): 0 - 13.725
  Temperature range (°C): 24.633 - 29.336
  Nitrate (umol/L): 0.000 - 0.617
  Salinity (PPS): 30.220 - 35.547
  Oxygen (ml/l): 4.290 - 4.851
  Phosphate (umol/l): 0.088 - 0.257
  Silicate (umol/l): 1.097 - 8.403

Graphical representation

Depth range (m): 0 - 13.725

Temperature range (°C): 24.633 - 29.336

Nitrate (umol/L): 0.000 - 0.617

Salinity (PPS): 30.220 - 35.547

Oxygen (ml/l): 4.290 - 4.851

Phosphate (umol/l): 0.088 - 0.257

Silicate (umol/l): 1.097 - 8.403
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Conservation

Threats

Not Evaluated
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest; bait: usually
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