Overview

Comprehensive Description

Description

  Common names: goby (English), gobio (Espanol)
 
Elacatinus puncticulatus (Ginsburg, 1938)


Red-head goby

Elongate; head rounded; upper lip connected to snout at front; a pore midway between front of the two eyes; 2 pores on preopercle; no teeth on roof of mouth; tongue with blunt tip; dorsal VII + I, 11 (10-12); anal rays I, 9-10; pectoral rays 20-23; pelvic fins fused in a disc; tail rounded; no scales.

Head entirely red or translucent with bright red stripe behind each eye, 2 red lines through eye; red from snout to behind eye on top of head; body translucent pale yellowish with about 8 internal black blotches or spots along middle of side and broad blackish internal stripe just above abdominal cavity.


Size: attains length of 4.6 cm.

Inhabits rocky reefs, frequently found with club urchins (Eucidaris thouarsi).


Depth: 1-21 m.

The central Gulf of California to Ecuador.   
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Biology

Inhabits rocky reefs, usually found near Eucidaris thouarsi.
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Distribution

Range Description

This species is endemic to the Eastern Pacific, ranging from the northern Gulf of California to Ecuador.
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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 Central Pacific: Gulf of California to Ecuador.
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Eastern Pacific: Gulf of California to Ecuador.
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Depth

Depth Range (m): 1 (S) - 21 (S)
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Physical Description

Morphology

Anal spines: 1; Analsoft rays: 10
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Size

Length max (cm): 4.6 (S)
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Size

Maximum size: 44 mm NG
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Max. size

4.4 cm SL (male/unsexed; (Ref. 11482))
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Diagnostic Description

This species differs from all its congeners in the eastern Pacific by having the following characters: 2 basicaudal scales; D2 typically I,11; numerous branched caudal rays 12-15; with a longitudinal dark stripe on head (Ref. 87125).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This reef-associated species inhabits rocky reefs to depths of 21m. It is usually found near Eucidaris thouarsi (Robertson and Allen, 2006). According to Dominici-Arosemena and Wolff (2006), this fish is present in deep rocky walls and reefs, zones of massive coral and exposed shallow rocky reef in Gulf of Chiriqui, Panama. In Gorgona Island, Colombia (Rubio 1986), this species is occasionally found in intertidal pools and coraline substrate.

Systems
  • Marine
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Environment

reef-associated; marine; depth range 2 - 6 m (Ref. 11482)
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Depth range based on 25 specimens in 1 taxon.
Water temperature and chemistry ranges based on 5 samples.

Environmental ranges
  Depth range (m): 0.2 - 37
  Temperature range (°C): 22.443 - 24.554
  Nitrate (umol/L): 0.162 - 3.645
  Salinity (PPS): 34.642 - 35.261
  Oxygen (ml/l): 4.733 - 4.879
  Phosphate (umol/l): 0.429 - 0.897
  Silicate (umol/l): 3.286 - 7.763

Graphical representation

Depth range (m): 0.2 - 37

Temperature range (°C): 22.443 - 24.554

Nitrate (umol/L): 0.162 - 3.645

Salinity (PPS): 34.642 - 35.261

Oxygen (ml/l): 4.733 - 4.879

Phosphate (umol/l): 0.429 - 0.897

Silicate (umol/l): 3.286 - 7.763
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 2 - 6m.
From 2 to 6 meters.

Habitat: reef-associated.
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Salinity: Marine, Marine Only

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Bottom, Bottom only

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

FishBase Habitat: Reef Associated
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Trophic Strategy

Inhabits rocky reefs, usually found near Eucidaris thouarsi (Ref. 11482). Sessile-invertebrate feeder (Ref. 57615).
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Feeding

Feeding Group: Carnivore, Ectoparasite cleaner

Diet: sessile crustacea, sessile worms, ectoparasites
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Life History and Behavior

Reproduction

Egg Type: Benthic, Pelagic larva
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Elacatinus puncticulatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 4
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
Findley, L. & Van Tassell, J.

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

Contributor/s

Justification
This species is widespread in the Eastern Tropical Pacific, and is relatively common throughout its range in suitable habitat. There are no known major threats for this species, and no current indication of widespread 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 relatively common within isuitable habitat within its range.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species. However, due to its bright coloration, it is collected for ornamental use, which may be a localized threat in some areas.
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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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Wikipedia

Elacatinus puncticulatus

Elacatinus puncticulatus is a species of goby from the eastern central Pacific Ocean where it is found on reefs from the Gulf of California to Ecuador. This species occurs at depths of from 2 to 6 metres (6.6 to 20 ft), usually in association with the sea urchin Eucidaris thouarsi. It grows to a length of 4.4 centimetres (1.7 in) SL. It occasionally makes its way into the aquarium trade.[2]

References[edit source | edit]

  1. ^ Findley, L. & Van Tassell, J. 2010. Elacatinus puncticulatus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>. Downloaded on 18 August 2013.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2013). "Elacatinus puncticulatus" in FishBase. June 2013 version.


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