Rigilius goby (Istigobius rigilius)

Scientific name: Istigobius rigilius Herre, 1953

Rigilius goby (Istigobius rigilius)

The Rigilius goby (Istigobius rigilius) is a marine fish of the family Gobiidae.

Biology

Dorsal spines (total): 7; Dorsal soft rays (total): 10-11; Anal spines: 1; Anal soft rays: 9 - 10; Vertebrae: 26. Upper pectoral fin rays entire. Predorsal with 7-9 cycloid scales; trunk with ctenoid scales. Segmented and non branching caudal rays 4, branching 13. Body color yellowish white; 2 brown diagonal lines from preoperculum to upper jaw, connected by a single line; 2 almost vertical brown lines on operculum. 4th spine of 1st dorsal fin longest. No sharp distinction between sexes in pigmentation and elongation of 2nd dorsal, pelvic and anal fins. Males sometimes with 3-4 dusky vertical bars on abdomen.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Istigobius rigilius
Family
Gobiidae (Gobies)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
10.0
Depth range
0–30 m (0–98 ft)
Environment
Marine; reef-associated; depth range 0 - 30 m
Climate
Tropical
Distribution
Western Pacific: Philippines and Indonesia to Kiribati and Fiji, south to Rowley Shoals in the eastern Indian Ocean and the Great Barrier Reef. Reported from the Ryukyu Islands.
Conservation status (IUCN)
Least Concern (LC)
Threat to humans
Harmless
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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