Overview

Comprehensive Description

Description

  Common names: croaker (English), chano (Espanol), corvina (Espanol)
 
Micropogonias ectenes (Jordan & Gilbert, 1882)


Slender croaker



Elongate, moderately compressed; prominent snout; eye moderate (1.7-1.8 in snout); mouth small, under snout, lips thin; teeth simple, no canines, outer row teeth of upper jaw slightly enlarged; 4 inconspicuous barbels along inner side of lower jaw;  margin of preopercle strongly serrated, spines at the angle; gill rakers 22-24; dorsal rays X + I, 23-26, first dorsal at most barely reaching origin of second dorsal fin when depressed; anal rays II, 7-8, 2nd  spine robust, ~ ¾ length of 1st  anal ray; tail margin a short, blunt point, upper lobe slightly concave; scales large, rough on body and nape, smooth on breast and cheek; pored lateral-line scales 51-54; soft dorsal and anal fins without scales.

Color silvery grey with brassy hue; upper sides with dark oblique streaks extending upward and backwards along scale rows; fins yellowish, spinous dorsal fin with blackish outer margin.

Size: grows to about 40 cm.

Inhabits coastal waters.


Depth: 1-33 m.


Southern Baja, the central Gulf of California to Acapulco.   
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Biology

Found along sandy coasts and bays; also in estuaries, river mouths, and coastal lagoons (Ref. 9118). Feeds mainly on benthic crustaceans, mollusks and worms (Ref. 9118). Common in local markets (Ref. 9118).
  • Chao, L.N. 1995 Sciaenidae. Corvinas, barbiches, bombaches, corvinatas, corvinetas, corvinillas, lambes, pescadillas, roncachos, verrugatos. p. 1427-1518. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para identificacion de especies para los fines de la pesca. Pacifico Centro-oriental. 3 volumes. 1813 p. (Ref. 9118)
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Distribution

Range Description

This species is endemic to the Eastern Pacific, and is found from southeastern Baja California and the lower Gulf of California (La Paz and Topolobampo) to south Acapulco, Mexico.
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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, Cortez + Mexican provinces endemic, Continent, Continent only

Residency: Resident

Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California), Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
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Eastern Central Pacific: Mexico.
  • Chao, L.N. 1995 Sciaenidae. Corvinas, barbiches, bombaches, corvinatas, corvinetas, corvinillas, lambes, pescadillas, roncachos, verrugatos. p. 1427-1518. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para identificacion de especies para los fines de la pesca. Pacifico Centro-oriental. 3 volumes. 1813 p. (Ref. 9118)
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Eastern Pacific: Mexico.
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Depth

Depth Range (m): 1 (G) - 33 (G)
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Physical Description

Morphology

Size

Length max (cm): 40.0 (S)
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Size

Maximum size: 400 mm TL
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Max. size

40.0 cm TL (male/unsexed; (Ref. 9118))
  • Chao, L.N. 1995 Sciaenidae. Corvinas, barbiches, bombaches, corvinatas, corvinetas, corvinillas, lambes, pescadillas, roncachos, verrugatos. p. 1427-1518. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para identificacion de especies para los fines de la pesca. Pacifico Centro-oriental. 3 volumes. 1813 p. (Ref. 9118)
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Type Information

Type for Micropogon ectenes
Catalog Number: USNM 29538
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): C. Gilbert
Year Collected: 1880
Locality: Mexico: Mazatlan., Sinaloa, Mexico, Pacific
  • Type:
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Type for Micropogon ectenes
Catalog Number: USNM 28336
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): C. Gilbert
Year Collected: 1880
Locality: Mexico: Mazatlan., Sinaloa, Mexico, Pacific
  • Type:
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Type for Micropogon ectenes
Catalog Number: USNM 28295
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): C. Gilbert
Year Collected: 1880
Locality: Mexico: Mazatlan., Sinaloa, Mexico, Pacific
  • Type:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This demersal species is found along sandy coasts and bays, estuaries, river mouths, and coastal lagoons to depths of 33m. It feeds mainly on benthic crustaceans, mollusks and worms.

Systems
  • Marine
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Environment

demersal; brackish; marine
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Depth range based on 11 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 2 - 12
  Temperature range (°C): 22.443 - 22.948
  Nitrate (umol/L): 2.687 - 3.645
  Salinity (PPS): 35.261 - 35.311
  Oxygen (ml/l): 4.879 - 4.912
  Phosphate (umol/l): 0.885 - 0.897
  Silicate (umol/l): 7.399 - 7.763

Graphical representation

Depth range (m): 2 - 12

Temperature range (°C): 22.443 - 22.948

Nitrate (umol/L): 2.687 - 3.645

Salinity (PPS): 35.261 - 35.311

Oxygen (ml/l): 4.879 - 4.912

Phosphate (umol/l): 0.885 - 0.897

Silicate (umol/l): 7.399 - 7.763
 
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, Sand & gravel, Beach, Estuary

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
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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
Chao, L., Espinosa, H. & van der Heiden, A.

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

Contributor/s

Justification
This species is widespread in the Eastern Pacific. There are no major threats for 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
No population information is available for this species.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species. However, this species is sometimes caught as by-catch in shrimp trawls and artisinal fisheries.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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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: questionable: based on ex-vessel price for species in this genus
  • Chao, L.N. 1995 Sciaenidae. Corvinas, barbiches, bombaches, corvinatas, corvinetas, corvinillas, lambes, pescadillas, roncachos, verrugatos. p. 1427-1518. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para identificacion de especies para los fines de la pesca. Pacifico Centro-oriental. 3 volumes. 1813 p. (Ref. 9118)
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