Overview

Comprehensive Description

Description

  Common names: grunt (English), sargo (English), burro (Espanol)
 
Anisotremus dovii (Günther, 1864)


Black-barred grunt,     Spot-head sargo,     Spotted-head grunt



Body deep, compressed, back high; head short, blunt; mouth small, low, ~ horizontal, lips fleshy; inside mouth not red; teeth in bands on jaws, outer ones larger, conical, none on center roof of mouth; a pair of conspicuous pores plus a central groove under the chin; preopercle finely serrated; dorsal continuous but deeply notched, 4th  spine longest, XI-XII, 13-16; anal III, 9-10, 2nd  spine long and thick;  longest dorsal spine and 2nd  anal spine > ½ head length; pectoral fins relatively short, not reaching anal origin; tail forked; scales moderate to large, rough, over entire body and head except front of snout, lips and chin, on membranes between dorsal and anal soft rays; lines of scales above lateral line in rows parallel to that line; lateral-line scales 45-52.

Whitish to dusky pale grey with 4-5 blackish bars on body and head; soft dorsal and soft part of anal fin dusky blackish.

Size: reaches 40 cm.

Inhabits soft bottoms of trawling grounds.

Depth: 10-40 m.

The mouth of the Gulf of California to northern Peru.
   
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Biology

Benthic over hard surfaces of the continental shelf (Ref. 9114). Marketed fresh (Ref. 9114).
  • McKay, R.J. and M. Schneider 1995 Haemulidae. Burros, corocoros, chulas, gallinazos, roncos. p. 1136-1173. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9114)   http://www.fishbase.org/references/FBRefSummary.php?id=9114&speccode=13701 External link.
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Distribution

Range Description

This species is endemic to the Eastern Pacific, and is found from the southern margins of Gulf of California to Peru.
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Zoogeography

See Map (including site records) of Distribution in the Tropical Eastern Pacific 
 
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic

Regional Endemism: All species, TEP endemic, Continental TEP endemic, 3 provinces (Cortez + Mexican + Panamic) endemic, Continent, Continent only

Residency: Resident

Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
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Eastern Pacific: southern margins of Gulf of California to Peru.
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Coasta Rica, Honduras and Nicaragua.
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Depth

Depth Range (m): 10 (S) - 40 (S)
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Physical Description

Morphology

Size

Length max (cm): 40.0 (S)
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Size

Maximum size: 450 mm ---
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Max. size

45.0 cm TL (male/unsexed; (Ref. 11035))
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Diagnostic Description

Body compressed and deep (depth contained 2.0 to 2.3 times in standard length); mouth small and terminal with thick, fleshy lips. Dorsal fin with 11 to 12 spines and 13 to 16 soft rays (XI, XII, 13-16); pectoral fins shorter than head, not reaching origin of anal fin; lateral line with 45 to 52 scales; scale series above lateral line parallel to it; back brownish; belly silvery; flanks with 5 dark vertical bars; fins dark (Ref. 55763).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This demersal species is found over hard surfaces of the continental shelf (McKay and Schneider 1995) to a depth of 40 m, and in estuaries associated with mangroves in Gulf of Nicoya, Costa Rica (Rojas et al. 1994).

Systems
  • Marine
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Environment

demersal; marine
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Depth range based on 12 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 0.3 - 169
  Temperature range (°C): 13.799 - 13.799
  Nitrate (umol/L): 31.128 - 31.128
  Salinity (PPS): 34.880 - 34.880
  Oxygen (ml/l): 0.373 - 0.373
  Phosphate (umol/l): 2.244 - 2.244
  Silicate (umol/l): 24.753 - 24.753

Graphical representation

Depth range (m): 0.3 - 169
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Salinity: Marine, Brackish

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Near Bottom, Bottom, Bottom + water column

Habitat: Soft bottom (mud, sand,gravel, beach, estuary & mangrove), Soft bottom only, Mud, Sand & gravel

FishBase Habitat: Demersal
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Trophic Strategy

Feeding

Feeding Group: Carnivore

Diet: mobile benthic worms, mobile benthic crustacea (shrimps/crabs), mobile benthic gastropods/bivalves, sponges/seasquirts/bryozoa
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Life History and Behavior

Reproduction

Egg Type: Pelagic, Pelagic larva
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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
2010

Assessor/s
Allen, G., Robertson, R. & Barraza, E.

Reviewer/s
Carpenter, K., Polidoro, B. & Livingstone, S. (Global Marine Species Assessment Team)

Contributor/s

Justification
This species is widespread in the Eastern Pacific, and common in at least part of its range. There are no known major threats to this species, and no current indication of population decline. It is listed as Least Concern.
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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

Population
This species is common in at least part of its range. It was found with a frequency of 18% in estuaries associated with mangrove in Gulf of Nicoya, Costa Rica (Rojas et al. 1994).

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species. However, it is considered to be an important commercial fish in Gulf of Montijo, Panama (Vega 2004), and it is sometimes caught as bycatch in cast net fishery in El Salvador.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
There are no known conservation measures for this species. However, this species' distribution falls partially into a number of Marine Protected Areas in the Eastern Pacific region (WDPA 2006).
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
  • McKay, R.J. and M. Schneider 1995 Haemulidae. Burros, corocoros, chulas, gallinazos, roncos. p. 1136-1173. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9114)   http://www.fishbase.org/references/FBRefSummary.php?id=9114&speccode=13701 External link.
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