Gobiodon rivulatus
Gobiodon rivulatus (Rüppell, 1830)
Rippled coralgoby
photo by Herler, J.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  6.4 cm TL (male/unsexed)
Environment:  reef-associated; freshwater; brackish; marine; depth range 0 - 78 m, amphidromous
Distribution:  Indo-West Pacific: Red Sea and East Africa to the Tuamoto Islands, north to the Ryukyu Islands.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 10-11; Anal spines: 1-1; Anal soft rays: 8-9. Characterized by red face with vertical blue lines; uniformly dark brown to light brown or bright green with a longitudinal thin red stripe; red stripe at the base of dorsal fins; absence of scales; complete pelvic fin frenum and basal membrane; depth of body at level of pelvic fins 2.6-3.0 in SL (Ref. 90102).
Biology:  Marine species usually living on coral reefs but also recorded from pools, freshwater streams or lagoon mouths (Ref. 4343). They are found on tabletop Acropora corals (Ref. 1602); a coral-commensal species (Ref. 72446). Adults prey on copepods (Ref. 92840). Monogamous (Ref. 52884). The male takes care of eggs deposited on a coral branch (Ref. 32163). Has the ability to change sex in both directions to favor reproductive success (Ref. 32163).
IUCN Red List Status: Least Concern (LC); Date assessed: 28 June 2018 Ref. (130435)
Threat to humans:  harmless


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