Overview

Comprehensive Description

Description

  Common names: flashlight-fish (English), flashlightfish (English), pez-linterna (Espanol), ojo de linterna (Espanol)
 
Phthanophaneron harveyi (Rosenblatt & Montgomery, 1976)


Panamic flashlightfish,     Gulf flashlight-fish


Body oblong; head large; bones of head and shoulder girdle strongly sculptured with numerous spine-bearing ridges; sensory canals on top separated by broad ridges and covered by skin; snout short and blunt; eye large, wider than snout length; one papilla behind eye; light organ under eye rotatable, with raisable shutter; mouth oblique, moderate size; teeth small and conical; dorsal fin in two parts, IV + I, 14-15; anal rays II, 10; pelvic fin I, 6; tail fin deeply forked; scales very small and very rough, about 80 in longitudinal series on upper side; scales of lateral line not enlarged;  a row of about 12-13 enlarged, keeled scales along center of belly.

Overall blackish brown, no reflective markings on body; a prominent pearly white luminous organ under eye.

Size: grows to at least 26 cm.

Habitat: rocky bottoms.

Depth: 0-100 m.

Known only from a few specimens captured in the central east and SW Gulf of California and lower Baja California.
   
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Biology

A specimen taken from a steep sandy slope with profuse black coral growth.
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Distribution

Range Description

This species is endemic to the Eastern Pacific, and is known only from four specimens captured in the eastern central and southwestern Gulf of California and lower Baja California, 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 province endemic, Continent, Continent only

Residency: Resident

Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California), Northern Subtropical (Cortez Province + Sinaloan Gap)
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Eastern Pacific: known only from the Gulf of California.
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Gulf of California.
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Depth

Depth Range (m): 0 (S) - 100 (S)
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Physical Description

Morphology

Dorsal spines (total): 5; Dorsal soft rays (total): 14; Analspines: 2; Analsoft rays: 10
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Size

Length max (cm): 26.0 (S)
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Size

Maximum size: 80 mm NG
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Max. size

8.0 cm TL (male/unsexed; (Ref. 11482))
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Diagnostic Description

Eye prominent with subocular light organ. 13 abdominal scutes.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This reef-associated species is found in areas with rocky substrate as well as in the edge water column and over soft substrate in reef areas.

Systems
  • Marine
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Environment

demersal; marine; depth range 32 - 36 m (Ref. 39674)
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Depth range based on 1 specimen in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 31.5 - 31.5
  Temperature range (°C): 19.490 - 19.490
  Nitrate (umol/L): 8.632 - 8.632
  Salinity (PPS): 35.034 - 35.034
  Oxygen (ml/l): 4.242 - 4.242
  Phosphate (umol/l): 1.385 - 1.385
  Silicate (umol/l): 17.402 - 17.402
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 0 - 35m.
Recorded at 35 meters.

Habitat: demersal.
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Salinity: Marine, Marine Only

Inshore/Offshore: Inshore, Inshore Only

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

Habitat: Reef (rock &/or coral), Rocks, Reef associated (reef + edges-water column & soft bottom), Water column

FishBase Habitat: Demersal
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Trophic Strategy

Feeding

Feeding Group: Planktivore

Diet: Pelagic crustacea
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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
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
McCosker, J., Findley, L. & Collette, B.

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

Contributor/s

Justification
This deep-water species is restricted to Baja California and the Gulf of California, Mexico, and is only known from four specimens. Little is known about its distribution, population, habitat requirements, or threats. It is listed as Data Deficient.
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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

Population
There no population information for this species.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species.
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Data deficient (DD)
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Management

Conservation Actions

Conservation Actions
There are no known conservation measures for this species. Given that it is a deep-water species, it is unlikely to occur in any Marine Protected Areas within its range.
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Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: public aquariums
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Wikipedia

Phthanophaneron harveyi

Phthanophaneron harveyi, the Gulf flashlightfish, is a species of flashlight fish endemic to the Gulf of Mexico where it is found at depths of from 32 to 36 metres (105 to 118 ft). This fish has been displayed in public aquariums. This species grows to a length of 8 centimetres (3.1 in) TL. This species is the only known member of its genus.

References[edit]

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