Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Gobiinae
Etymology: Macrodontogobius: Greek, makros = great + Greek, odous = teeth + Latin, gobius = gudgeon (Ref. 45335). More on author: Herre.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; reef-associated; depth range 0 - 20 m (Ref. 48637), usually 1 - 10 m (Ref. 90102). Tropical; 15°N - 30°S
Indo-Pacific: Seychelles eastward into Oceania, including Micronesia, Fanning, and Phoenix islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.5 cm SL male/unsexed; (Ref. 48637)
soft rays: 9 - 10;
Vertebrae: 26. Ground color of dorsal part of body greenish brown, ventral whitish yellow; a black spot at base of caudal fin; 7 dark brown blotches longitudinally arranged in mid-lateral area; black spots on cheeks and operculae, one ventral to the eye; pectoral fins hyaline; white pelvic fins. Pigment intensity variable among localities. 7 or less predorsal scales. Large, ctenoid scales except for cycloid scales in isthmus (Ref. 403); pelvic fins united with well-developed frenum; rounded caudal fin, slightly longer than head; longitudinal scale series 27-31; fully scaled cheek and opercle; depth of body 4.6-6.3 in SL (Ref. 90102).
Inhabits coastal bays, lagoons and estuaries on fine sand along reef margins to about 20 meters depth (Ref. 48637). Solitary (Ref. 90102). Specimens collected from shallow waters to 7 m, near coral reefs. In southern Japan, the species inhabits sandy bay bottoms.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Murdy, E.O., 1985. A review of the gobiid fish genera Exyrias and Macrodontogobius, with description of a new species of Exyrias. Indo-Pac. Fish. (10):14 p. (Ref. 403)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 25.4 - 29.3, mean 28.5 (based on 2331 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00418 - 0.01902), b=3.08 (2.91 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.8 ±0.4 se; Based on diet studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (14 of 100) .