Elacatinus pridisi Guimarães, Gasparini & Rocha, 2004
Trindade cleaner goby
photo by Gasparini, J.L.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  2.84 cm SL (male/unsexed)
Environment:  demersal; marine; depth range 3 - 30 m
Distribution:  Southwest Atlantic: Trinidade Island, Brazil.
Diagnosis:  Dorsal soft rays (total): 11-12; Anal soft rays: 11-11. Diagnosis: This species differs from its congeners of the Horsti complex (sensu Böhlke & Robins 1968) that have a pale stripe extending from the eye to the caudal-fin base by the following combination of characters: dark longitudinal stripe wide, reaching lower abdomen and base of anal-fin (vs. never reaching abdomen or base of anal fin); pectoral-fin rays typically 18 (vs. typically 17 in E. randalli and E. figaro and typically 16 in E. atronasum (Böhlke & Robins); anal-fin rays typically 11 (vs. typically 10 in E. figaro); oval spot present on snout (vs. no spot in E. atronasum and E. horsti (Böhlke & Robins), a "V"-shaped spot in E. prochilos (Böhlke & Robins), and a medial bar in E. xanthiprora (Böhlke & Robins), E. louisae (Böhlke & Robins) and E. lori Colin) (Ref. 52745). Description: Body naked, elongate. Mouth subterminal, no canine teeth on jaws. Dorsal fin without elongated anterior spines. Caudal fin rounded and ventral fin cup complete. Dorsal fin rays VII-11-12 (modally 12). Anal-fin rays 11. Pectoral-fin rays 17-18 (modally 18) (Ref. 52745).
Biology:  Found over rocky reefs and calcareous-algae banks around the island. Observed in cleaning activities during the day (and most of its life-cycle) with clients varying from large-sized carnivores such as Carcharhinus perezi (Poey) to small-sized planktivores such as Chromis multilineata (Guichenot) (Ref. 52745).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (124695)
Threat to humans:  harmless
Country info:   

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