Porichthys greenei — Details

Greene's Midshipman learn more about names for this taxon

Overview

Comprehensive Description

Biology

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Found in shallow waters up to depths of 27 m (Ref. 9277).
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Description

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Common names: midshipman (English), sapo (Espanol), pez-fraile (Espanol)
 
Porichthys greenei Gilbert & Starks, 1904

Shorthead midshipman,     Greene's midshipman,     Grumpy midshipman


Eye small; teeth like canines; 1 solid spine on opercle; no subopercular spines;  7 (7-8) rakers on lower limb of first gill arch; first dorsal fin 2 solid spines, separate from second dorsal fin; second dorsal 35-39 rays; anal rays 35 (33-37); pectoral round, 14-17 rays; 10 tail rays; dorsal and anal fins broadly joined to tail; no scales; 4 lateral lines on body with light organs; lower lateral line ends ~ 12 pores behind same line of light organs .


5 (4-6) dark saddles on back; dorsal, anal and tail fins clear, no dark borders or spots.

Size: 8.5 cm.

Habitat: sandy and muddy bottoms.

Depth: 5-30 m.

Southern Mexico to Colombia.

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Distribution

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Eastern Central Pacific: Gulf of Tehuantepec, Mexico to Panama.
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Range Description

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This species is endemic to the Eastern Central Pacific, and is found from the Gulf of Tehuantepec, Mexico to eastern Panama.
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Eastern Pacific.
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Depth

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Depth Range (m): 5 (S) - 30 (S)
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Zoogeography

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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, Mexican + Panamic provinces endemic, Continent, Continent only

Residency: Resident

Climate Zone: Northern Tropical (Mexican Province to Nicaragua + Revillagigedos), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)

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Physical Description

Morphology

Size

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Length max (cm): 8.5 (S)
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Size

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Maximum size: 77 mm SL
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Max. size

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7.7 cm SL (male/unsexed; (Ref. 9277))
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Ecology

Habitat

Environment

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demersal; marine; depth range ? - 27 m (Ref. 9277)
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Habitat and Ecology

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Habitat and Ecology
This species is found in shallow waters over soft substrate (Collette 1995).

Systems
  • Marine
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Depth range based on 29 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 1 - 200
  Temperature range (°C): 23.629 - 23.629
  Nitrate (umol/L): 16.805 - 16.805
  Salinity (PPS): 34.631 - 34.631
  Oxygen (ml/l): 2.460 - 2.460
  Phosphate (umol/l): 1.485 - 1.485
  Silicate (umol/l): 12.680 - 12.680

Graphical representation

Depth range (m): 1 - 200
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Salinity: Brackish, Freshwater

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Bottom, Bottom only

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

FishBase Habitat: Demersal
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Trophic Strategy

Feeding

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Feeding Group: Carnivore

Diet: mobile benthic crustacea (shrimps/crabs), mobile benthic gastropods/bivalves, bony fishes
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Life History and Behavior

Reproduction

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Egg Type: Benthic, No pelagic larva, No pelagic phase
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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Collette, B., Acero, A., Betancur, R., Cotto, A., Rojas, P.

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

Justification
This species is widespread in the Eastern Pacific region. No major threats to this species are known, and there is 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

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Population
No population information is available for this species.

Population Trend
Unknown
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Threats

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Least Concern (LC)
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Major Threats
No major threats are known for this species.
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Management

Conservation Actions

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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 Tropical Pacific region (WDPA 2006).
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