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Overview

Comprehensive Description

Description

Common names: drum (English), bombache (Espanol), cajera (Espanol), boquinete (Espanol), corvina (Espanol)
 
Larimus pacificus  Jordan & Bollman, 1890


Pacific drum



Body short, oval, compressed; back humped; head short, compressed; snout short;  eye large, 3.6-4.0 in head length; mouth slighly oblique, ends behind center of eye; lower jaw projecting slightly; 4 minute pores on tip of chin, no barbel; snout with 8 pores; teeth small and sharp, in 1-2 rows; gill rakers 31-33, long and slender; preopercular margin smooth; dorsal fin deeply notched X + I, 26-28; anal fin II, 6,  2nd  spine strong, slightly shorter than first soft ray; pectoral fins 16-17, relatively long, reaching to about level of anus; pelvic fins shorter, reaching about half way to anal fin origin; tail  with angular point; scales rough on body, smooth on head and fins; soft dorsal and anal fins with scaly sheath on basal ½; pored lateral-line scales 45-50.

Silver, greyish on upper back; sides sometimes with darkish stripes following scale rows; axil of pectoral fin dark; fins pale to dusky.

Size: reaches length of at least 30 cm.

Inhabits coastal waters.

Depth: 1-50 m.

Southern Baja and the Gulf of California to Chile; the Galapagos.

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Biology

Uncommon species inhabiting coastal waters (Ref. 9118). Feeds mainly on planktonic crustaceans (Ref. 9118). Minimum depth from Ref. 58018.
  • 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)   http://www.fishbase.org/references/FBRefSummary.php?id=9118&speccode=13985 External link.
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Distribution

Range Description

This species is endemic to the Eastern Pacific, and is found from thesouthern Baja California and the Gulf of California to northern Peru, including the Galapagos Archipelago.
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Depth

Depth Range (m): 1 (S) - 50 (S)
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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, Continent + Island (s), Continent, Island (s)

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), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo), South Temperate (Peruvian Province )

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Eastern Pacific: Mexico to Peru.
  • 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)   http://www.fishbase.org/references/FBRefSummary.php?id=9118&speccode=13985 External link.
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Physical Description

Morphology

Size

Length max (cm): 30.0 (S)
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Size

Maximum size: 300 mm TL
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Max. size

32.0 cm TL (male/unsexed; (Ref. 55763))
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Diagnostic Description

Body moderately short, and not very deep; back little arched or elevated; mouth large and oblique; posterior end of upper jaw extending beyond center of eye; snout with 3 dorsql pores; lower branch of first gill arch with 20 to 21 gill rakers; pectoral fins with 16 to 17 rays; ctenoid scales on body; body gray to silvery brown, darker dorsally; flanks with very distinct black stripes along the scales rows; fins pale to grayish (Ref. 55763).
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Type Information

Type for Larimus pacificus
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1888
Locality: Ecuador To Panama, Panama, Pacific
Depth (m): 29 to 29
Vessel: Albatross
  • Type:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This benthopelagic species inhabits coastal waters (Chao, 1995) to depths of 100m. It feeds mainly on planktonic crustaceans (Chao, 1995).

Systems
  • Marine
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Depth range based on 22 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 4 - 86.5
  Temperature range (°C): 20.583 - 22.948
  Nitrate (umol/L): 0.441 - 2.687
  Salinity (PPS): 34.246 - 35.311
  Oxygen (ml/l): 4.912 - 5.165
  Phosphate (umol/l): 0.472 - 0.885
  Silicate (umol/l): 4.140 - 7.399

Graphical representation

Depth range (m): 4 - 86.5

Temperature range (°C): 20.583 - 22.948

Nitrate (umol/L): 0.441 - 2.687

Salinity (PPS): 34.246 - 35.311

Oxygen (ml/l): 4.912 - 5.165

Phosphate (umol/l): 0.472 - 0.885

Silicate (umol/l): 4.140 - 7.399
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth: 0 - 50m.
Recorded at 50 meters.

Habitat: pelagic. Uncommon species. Inhabits coastal waters up to a depth of 50 m. Feeds principally on planktonic crustaceans.
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Habitat

Salinity: Marine, Brackish

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Mid Water, Near Bottom, Water column only

Habitat: Estuary, Water column

FishBase Habitat: Pelagic
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Environment

pelagic-neritic; marine; depth range 29 - 50 m (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)   http://www.fishbase.org/references/FBRefSummary.php?id=9118&speccode=13985 External link.
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Trophic Strategy

Uncommon species inhabiting coastal waters. Feeds mainly on planktonic crustaceans.
  • 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)   http://www.fishbase.org/references/FBRefSummary.php?id=9118&speccode=13985 External link.
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Feeding

Feeding Group: Planktivore

Diet: Pelagic crustacea, zooplankton, pelagic fish larvae
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Life History and Behavior

Reproduction

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., Findley, L., van der Heiden, A.

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

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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Conservation status

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

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. It can be common in local markets.
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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
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