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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobiinae
Etymology: Callogobius: Greek, kalos, kallos = beautiful + Latin, gobius = gudgeon (Ref. 45335); crassus: Name from Latin 'crassus' meaning thick, fat or stout; referring to the stout body of this species.
More on authors: McKinney & Lachner.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 5 - 25 m (Ref. 90102). Tropical
Western Pacific: from the Philippines to the Society Islands (Tahiti); including Papua New Guinea and Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.5 cm TL male/unsexed; (Ref. 90102)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 7 - 8; Anal spines: 1; Anal soft rays: 6 - 7. Characterized by mottled brown body color with dark brown bar on nape; three irregular dark brown bars below first and second dorsal fins; caudal fin base with dark bar; yellowish fins with alternating dark brown and pale bands or rows of dark brown spots; united pelvic fins at bases; absent frenum; rounded caudal fin; longitudinal scale series 19-21; cycloid scales on head and anterior body, ctenoid posteriorly on body; predorsal scales 9-11; head with prominent papillae ridges; absence of cephalic sensory pores; depth of body 3.7-4.4 SL (Ref. 90102).
Body shape (shape guide): fusiform / normal.
Inhabits reef crevices in 5-25 m (Ref. 90102).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
McKinney, J.F. and E.A. Lachner, 1984. Callogobius crassus, a new fish from the Indo-Pacific region (Teleostei: Gobiidae). Proc. Biol. Soc. Wash. 97(3):627-631. (Ref. 123881)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
Human uses
Fisheries: of no interest
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