Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: Continental shelf waters from North Carolina to Mississippi, though apparently rare or absent in southern Florida (Leslie and Stewart 1986).

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Western Central Atlantic: north of Cape Hatteras, North Carolina, to about Palm Beach on east coast of Florida and in Gulf of Mexico from Fort Myers, Florida, to Mississippi; apparently rare or absent in southern Florida.
  • North-West Atlantic Ocean species (NWARMS)
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Western Central Atlantic: north of Cape Hatteras, North Carolina, to about Palm Beach on east coast of Florida and in Gulf of Mexico from Fort Myers, Florida, to Mississippi; apparently rare or absent in southern Florida.
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Western North Atlantic.
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Physical Description

Morphology

Dorsal soft rays (total): 70 - 82; Analsoft rays: 54 - 64
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Size

Length: 8 cm

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Max. size

9.0 cm SL (male/unsexed; (Ref. 39355))
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Type Information

Paratype for Etropus cyclosquamus Leslie & Stewart
Catalog Number: USNM 268481
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1977
Locality: North Carolina, United States, Atlantic
Depth (m): 32 to 32
Vessel: Eastward
  • Paratype: Leslie, A. & Stewart, D. 1986. Copeia. 1986 (1): 143.
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Ecology

Habitat

Habitat Type: Marine

Comments: Continental shelf waters; most abundant at depths of 10-30 m (Leslie and Stewart 1986). Eggs and larvae are pelagic offshore (Leslie and Stewart 1986).

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benthic
  • North-West Atlantic Ocean species (NWARMS)
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Environment

demersal; marine; depth range 31 - 31 m (Ref. 58018)
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Depth range based on 406 specimens in 1 taxon.
Water temperature and chemistry ranges based on 86 samples.

Environmental ranges
  Depth range (m): 0 - 64
  Temperature range (°C): 21.296 - 25.874
  Nitrate (umol/L): 0.289 - 2.951
  Salinity (PPS): 34.478 - 36.284
  Oxygen (ml/l): 4.350 - 5.176
  Phosphate (umol/l): 0.099 - 0.283
  Silicate (umol/l): 0.756 - 1.848

Graphical representation

Depth range (m): 0 - 64

Temperature range (°C): 21.296 - 25.874

Nitrate (umol/L): 0.289 - 2.951

Salinity (PPS): 34.478 - 36.284

Oxygen (ml/l): 4.350 - 5.176

Phosphate (umol/l): 0.099 - 0.283

Silicate (umol/l): 0.756 - 1.848
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Migration

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

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Life History and Behavior

Reproduction

Spawns apparently primarily in winter (Leslie and Stewart 1986).

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N4 - Apparently Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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Threats

Not Evaluated
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Names and Taxonomy

Taxonomy

Comments: One of nine species in the genus. See Leslie and Stewart (1986) for information on the systematics of ETROPUS on the U.S. Atlantic coast.

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