Actinopteri (ray-finned fishes) > 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
Marine; demersal; depth range 5 - 25 m (Ref. 90102), usually - m (Ref. ). Tropical; 0°C -
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)
Morphology | Morphometrics
(total): 6 - 7;
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).
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. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 28.1 - 29.2, mean 28.8 °C (based on 567 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00475 - 0.02204), b=3.03 (2.85 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.1 ±0.2 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .