Overview

Comprehensive Description

Biology

Collected only on three occasions in the mouth of slow-moving streams, in brackish or fresh waters within a few meters of the sea. Swims in small groups near the surface over sandy or muddy bottoms at temperatures of 25-26°C. Feeds on aquatic insects (Ref. 36880).
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Distribution

Central America: Guatemala to Panama.
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Guatemala to Panama: Belize, Guatemala and Panama.
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Physical Description

Size

Maximum size: 30 mm SL
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Max. size

3.0 cm SL (male/unsexed; (Ref. 30499)); 4.08 cm SL (female)
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Diagnostic Description

Head and body gray. A triangular black blotch below the eye. Caudal fin with 6 - 7 black spots forming a vertical series in the center of the fin; sometimes there are similar spots on the dorsal fin. Anal fin dusky. Snout pointed. Dorsal fin inserts behind the end of the anal-fin base (Ref. 36880).
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Type Information

Syntype for Gambusia nicaraguensis
Catalog Number: USNM 151461
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): Dow
Locality: Nicaragua, Lake Nicaragua, Nicaragua, North America
  • Syntype: Guenther, A. 1866. Catalogue of the fishes in the British Museum. 6: 336.
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Ecology

Habitat

Habitat and Ecology

Systems
  • Freshwater
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Environment

benthopelagic; freshwater; brackish
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Depth range based on 12 specimens in 1 taxon.
Water temperature and chemistry ranges based on 4 samples.

Environmental ranges
  Depth range (m): 0.2 - 2.5
  Temperature range (°C): 27.595 - 27.724
  Nitrate (umol/L): 0.256 - 0.600
  Salinity (PPS): 35.887 - 36.144
  Oxygen (ml/l): 4.330 - 4.592
  Phosphate (umol/l): 0.114 - 0.137
  Silicate (umol/l): 1.728 - 2.539

Graphical representation

Depth range (m): 0.2 - 2.5

Temperature range (°C): 27.595 - 27.724

Nitrate (umol/L): 0.256 - 0.600

Salinity (PPS): 35.887 - 36.144

Oxygen (ml/l): 4.330 - 4.592

Phosphate (umol/l): 0.114 - 0.137

Silicate (umol/l): 1.728 - 2.539
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Trophic Strategy

Collected only on three occasions in the mouth of slow-moving streams, in brackish or fresh waters within a few meters of the sea. Swims in small groups near the surface over sandy or muddy bottoms at temperatures of 25 - 26°C. Feeds on aquatic insects (Ref. 36880).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Gambusia nicaraguensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
2.3

Year Assessed
1996
  • Needs updating

Assessor/s
World Conservation Monitoring Centre

Reviewer/s

Contributor/s

History
  • 1994
    Indeterminate
    (Groombridge 1994)
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Wikipedia

Gambusia aestiputeus

Gambusia aestiputeus is a species of fish in the Poeciliidae family. It is endemic to Colombia.

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