Elacatinus jarocho, Jarocho goby

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Elacatinus jarocho Taylor & Akins, 2007

Jarocho goby
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drawing shows typical species in Gobiidae.

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Elacatinus: Greek, elakatines = fusiform fishes preserved in salt (Ref. 45335);  jarocho: Named for Jarocho, the common local name for Veracruzanos, the native people of Veracruz, Mexico; noun in apposition. Authors are pleased to honor the Jarocho, who have embraced the protection and conservation of the Veracruz.

Environment: milieu / climate zone / depth range / distribution range Écologie

; marin récifal; profondeur 3 - 25 m (Ref. 58341).   Subtropical; 21°N - 19°N, 96°W - 97°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: Caribbean. Known only from the Veracruz reef system near Veracruz, Mexico (as far north as Isla De Lobos [21°29.36'N, 97°13.53'W] and as far south as Anton Lizardo [ca. 19°04.41'N, 95°50.21'W]).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 2.7 cm SL mâle / non sexé; (Ref. 58341)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 7; Rayons mous dorsaux (Total): 112; Épines anales 1; Rayons mous anaux: 9 - 11. Elacatinus jarocho is readily distinguished from other species of Elacatinus (s.s.) by the disjunct yellow lateral stripe that appears as a dash over the eye and on the caudal fin, a yellow medial stripe on the snout, and a black ovoid to rectangular spot at the base of the caudal fin, immediately ventral to the yellow dash (Ref. 58341).

Biologie     Glossaire (ex. epibenthic)

This species was found between 3-25 m depth on high profile coral reefs typically dominated by Montastrea cavernosa (Linneaus), M. annularis (Ellis and Solander), Colpophyllia natans (Houttuyn) and skeletal reef framework. Elacatinus jarocho joins E. atronasus (Böhlke & Robins) as the only two species in the genus to school in the water column. Small to large aggregations (12-60 individuals) of E. jarocho were normally found close to the reef near high profile corals or overhangs. Such reef structure presumably provides shelter from direct sunlight because aggregations were usually observed in darker, shaded areas rather than in direct sunlight. Individuals of E. jarocho, unlike E. atronasus, were never observed stationary on any substrate, but rather hovered continuously about 5–25 cm above the reef, frequently in association with Coryphopterus hyalinus Böhlke & Robins or C. personatus (Jordan & Thompson). This species was not observed to clean other species or interact in other symbiotic relationships. Small and large individuals coexisted in the same aggregations and did not display territorial or hierarchical behaviors. Individual fish would often, though not always, move slowly toward cover when approached to less than 1 m by scuba divers (Ref. 58341).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Taylor, M.S. and L. Akins, 2007. Two new species of Elacatinus (Teleostei: Gobiidae) from the Mexican coast of the Gulf of Mexico. Zootaxa 1425:45-51. (Ref. 58341)

Statut dans la liste rouge de l'IUCN (Ref. 123251)

  Menacé (EN) (B2ab(iii)); Date assessed: 10 January 2014

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00454 - 0.02011), b=3.05 (2.88 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.3   ±0.3 se; based on size and trophs of closest relatives
Résilience (Ref. 120179):  Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité (Ref. 59153):  Low vulnerability (10 of 100) .