Overview

Comprehensive Description

Description

  Common names: blenny (English), trambollo (Espanol)
 
Malacoctenus zacae Springer, 1959


Zaca blenny


Head slender, snout pointed; a close-set pair of heavily branched nape cirri, a branched cirrus over eye; upper part of rear end of top jaw covered by bone under eye; no small teeth behind outer row of large teeth on upper jaw; no teeth on sides of roof of mouth;  dorsal fin XX, 10, (XX-XXI, 9-11), notch between spines and rays; anal II, 19 (18-20); pectoral 14; 3 pelvic soft rays;  50-55 lateral line scales; no scales on midline in front of dorsal fin or on prepectoral area, sometimes a few scales on breast.



Pale olive; ~ 5 faint dark bars on body; usually a dark greenish to brownish stripe from eye to tail fin base, with dark spots where that stripe is crossed by the dark bars; ~ 6 greenish-brown lines along lower side; belly and pectoral fins often yellowish; occasionally with dark spot at pelvic-fin base.


Size: attains a length of 6.5 cm.

Habitat: rocky bottoms.

Depth: 1-10 m?

The tip of Baja California, the SW Gulf of California, and central Mexico.
   
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Biology

Feeds on invertebrates.
  • Allen, G.R. and D.R. Robertson 1994 Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
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Distribution

Range Description

This species is endemic to the Eastern Pacific, and is found from the tip of Baja California and the south-western Gulf of California to central and southern 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: Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
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Eastern Pacific.
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Eastern Central Pacific: southern Baja California to Acapulco in Mexico.
  • Allen, G.R. and D.R. Robertson 1994 Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
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Depth

Depth Range (m): 1 (G) - 10 (G)
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Physical Description

Morphology

Size

Length max (cm): 6.5 (S)
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Size

Maximum size: 65 mm NG
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Max. size

6.5 cm TL (male/unsexed; (Ref. 11482))
  • Allen, G.R. and D.R. Robertson 1994 Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
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Type Information

Paratype for Malacoctenus zacae Springer
Catalog Number: USNM 174966
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Berdegue
Year Collected: 1956
Locality: Mexico, Guerrero, Acapulco, Playa Las Pulgas (El Farallon), Mexico, Pacific
  • Paratype: Springer, V. G. 1959. Publications of the Institute of Marine Science, University of Texas. 5: 470.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This benthic species that inhabits rocky substrate to depths of 10m.

Systems
  • Marine
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Environment

demersal; marine
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Depth range based on 3 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 2 - 3.2025
  Temperature range (°C): 24.488 - 24.554
  Nitrate (umol/L): 0.162 - 0.290
  Salinity (PPS): 34.642 - 35.023
  Oxygen (ml/l): 4.733 - 4.879
  Phosphate (umol/l): 0.429 - 0.543
  Silicate (umol/l): 3.286 - 4.062

Graphical representation

Depth range (m): 2 - 3.2025

Temperature range (°C): 24.488 - 24.554

Nitrate (umol/L): 0.162 - 0.290

Salinity (PPS): 34.642 - 35.023

Oxygen (ml/l): 4.733 - 4.879

Phosphate (umol/l): 0.429 - 0.543

Silicate (umol/l): 3.286 - 4.062
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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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, Reef associated (reef + edges-water column & soft bottom)

FishBase Habitat: Demersal
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Trophic Strategy

Feeds on invertebrates.
  • Allen, G.R. and D.R. Robertson 1994 Fishes of the tropical eastern Pacific. University of Hawaii Press, Honolulu. 332 p. (Ref. 11482)
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Feeding

Feeding Group: Carnivore

Diet: mobile benthic worms, mobile benthic crustacea (shrimps/crabs)
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Life History and Behavior

Reproduction

Egg Type: Benthic, 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
Hastings, P.

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

Contributor/s

Justification
This species is relatively widespread in the Eastern Pacific, and is considered to be uncommon throughout its range. There are no known major threats to 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. This species is considered to be uncommon throughout its range.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species.
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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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Wikipedia

Malacoctenus zacae

Malacoctenus zacae, the Zaca blenny, is a species of labrisomid blenny native to the Pacific coast of Mexico from Baja California to Acapulco. This species can reach a length of 6.5 centimetres (2.6 in) TL.[2]

References[edit]

  1. ^ Hastings, P. 2010. Malacoctenus zacae. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 07 December 2013.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2013). "Malacoctenus zacae" in FishBase. October 2013 version.


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