Rigilius goby

📖 Overview

Rigilius goby (Istigobius rigilius) is a ray-finned fish of the family Gobiidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 10.8 cm. It occurs at depths between 0 and 30 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

🔬 Taxonomy

🐟 Physical Description

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 ; fully united pelvic fins with well-developed frenum; longitudinal scale series 29-32; predorsal scales 7-9, reaching interorbital space; absence of scales on cheek or opercle; depth of body 4.7-6.1 in SL .: elongated; Cross section: circular.

🌀 Behaviour

Behavioural data for Rigilius goby is currently being reviewed.

🦐 Diet

Diet information for Rigilius goby is currently being compiled.

🥚 Reproduction

Genital papilla of male terminating to side of anal spine. Papilla of female truncate and terminating posteriorly well before origin of anal fin.

🌍 Habitat & Distribution

Marine; reef-associated; depth range 0 - 30 m . Tropical; 20°N - 25°S south to Rowley Shoals in the eastern Indian Ocean and the Great Barrier Reef.

🌿 Ecology

📐 Morphometrics

🌡️ Water Parameters & Tolerance

🛡️ Conservation Assessment

📊 Population Risk & Fisheries

🐠 Related Species

🔍 Similar Species

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

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