Overview

Comprehensive Description

Description

  Common names: grunt (English), roncacho (Espanol), ronco (Espanol), corocoro (Espanol), roncador (Espanol)
 
Pomadasys branickii (Steindachner, 1879)


Sand grunt



Elongate, strongly compressed; eye relatively large, 2.6-3.2 in head length; mouth moderate in size, inside not red, lips thin; chin with 2 pores at front and 2 inside hole behind, plus a longitudinal groove; preopercle weakly or not serrated, ventral serrations not forward pointing; dorsal fin XIII, 11-12, moderately notched; anal III, 7, second anal spine very long and stout, its length about two times eye diameter or more; pectoral fins relatively long, passing tips of depressed pelvic fins; no scales on soft dorsal and anal fins; 47-51 pored lateral line scales; 5 oblique rows of scales between lateral line and origin of dorsal fin.


Silvery with yellowish-brown opercular membrane and yellow iris; juveniles with ~ five indistinct dusky bars from nape along back to tail base.

Size: grows to at least 30 cm.

Inhabits muddy bays and estuaries, also enters river mouths.


Depth: 0-55 m.


Southern Baja and the lower 2/3 Gulf of California to Peru.   
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Biology

Found on sandy bottoms near the coast (Ref. 9114). Penetrates estuaries (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 southern Baja California and the central 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: Mexico to Peru.
  • 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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Eastern Pacific.
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Depth

Depth Range (m): 0 (S) - 55 (S)
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Physical Description

Morphology

Size

Length max (cm): 30.0 (S)
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Size

Maximum size: 300 mm ---
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Max. size

30.0 cm TL (male/unsexed; (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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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This demersal species can be found on sandy substrate near the coast, and also enters estuaries and mangroves.

Systems
  • Marine
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Environment

demersal; brackish; marine
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Depth range based on 27 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 0.5 - 165
  Temperature range (°C): 14.235 - 16.549
  Nitrate (umol/L): 30.223 - 31.396
  Salinity (PPS): 34.816 - 34.888
  Oxygen (ml/l): 0.376 - 0.767
  Phosphate (umol/l): 2.132 - 2.256
  Silicate (umol/l): 21.239 - 23.940

Graphical representation

Depth range (m): 0.5 - 165

Temperature range (°C): 14.235 - 16.549

Nitrate (umol/L): 30.223 - 31.396

Salinity (PPS): 34.816 - 34.888

Oxygen (ml/l): 0.376 - 0.767

Phosphate (umol/l): 2.132 - 2.256

Silicate (umol/l): 21.239 - 23.940
 
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, Estuary, Mangrove

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, octopus/squid/cuttlefish
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Life History and Behavior

Reproduction

Egg Type: Pelagic, Pelagic larva
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Pomadasys branickii

The following is a representative barcode sequence, the centroid of all available sequences for this species.


No available public DNA sequences.

Download FASTA File
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Statistics of barcoding coverage: Pomadasys branickii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 5
Species With Barcodes: 1
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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.

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 throughout most 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 several parts of its range. In Bahía de Navidad, Jalisco, México, this fish was captured four times within 12 (one each month) field trips throughout a year (Rojo-Vázquez et al. 2001). In Golfo de Nicoya, Costa Rica, this fish was considered to be an occasional or transient species in two different estuaries areas associated with mangroves (Rojas et al. 1994). It is considered to be reasonably common in estuaries in Panama.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species.
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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: minor commercial; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family
  • 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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