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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
Sinh thái học
Biển Cùng sống ở rạn san hô; Mức độ sâu 3 - 25 m (Ref. 58341). Subtropical; 21°N - 19°N, 96°W - 97°W
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]).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 2.7 cm SL con đực/không giới tính; (Ref. 58341)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng) : 7; Các vây lưng mềm (tổng cộng) : 11 - 12; Tia cứng vây hậu môn: 1; Tia mềm vây hậu môn: 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).
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
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
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(1):45-51. (Ref. 58341)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00477 - 0.02194), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
