Environment: milieu / climate zone / depth range / distribution range
; marino demersale; distribuzione batimetrica 3 - 14 m. Tropical; 30°N - 15°S
Northwest Pacific: southern Japan, Taiwan, and Hong Kong.
Length at first maturity / Size / Peso / Age
Maturity: Lm ?, range 2 - ? cm
Max length : 7.1 cm TL maschio/sesso non determinato; (Ref. 420); 7.8 cm TL (female)
Spine dorsali (totale): 7; Raggi dorsali molli (totale): 10-11; Spine anali 1; Raggi anali molli: 9 - 10; Vertebre: 26. Upper pectoral fin rays entire. Predorsal cycloid scales 10-13; ctenoid on trunk. Body dusky brown with red spots; 4 blue spots on operculum; black line running from eye along sensory pore path to pectoral base; 2 dusky blotches on pectoral base, the uppermost spreading onto fin rays; large inverted `U'-shaped blotch on the cheek. In male, appressed anal fin occasionally reaching caudal fin, appressed dorsal reaching or overlapping caudal fin. Appressed anal and dorsal fins of female ending 2-3 and 1-2 scales, respectively, of caudal fin.
Common in sandy bottoms of shallow waters. Also observed to live solitarily or in small schools near crevices or under stones. Occurs at 21.5 °C (Ref. 4959).
Genital papilla of male terminating to side of anal spine, of female terminating well before origin of anal fin and sometimes it is slightly pigmented.
Murdy, E.O. and D.F. Hoese, 1985. Revision of the gobiid fish genus Istigobius. Indo-Pac. Fish. (4):41 p. (Ref. 420)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
BibliografiaAcquacolturaProfilo di acquacolturaVarietàGeneticaFrequenze allelicheEreditarietàMalattieElaborazioneNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.3 - 28.1, mean 27.4 °C (based on 299 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00454 - 0.02011), b=3.05 (2.88 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resilienza (Ref. 120179
): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (14 of 100) .
Nutrients (Ref. 124155
): Calcium = 439 [211, 886] mg/100g ; Iron = 1.29 [0.69, 2.41] mg/100g ; Protein = 17.8 [16.0, 19.5] % ; Omega3 = 0.3 [0.1, 0.6] g/100g ; Selenium = 44.6 [20.4, 93.3] μg/100g ; VitaminA = 32.7 [10.1, 94.0] μg/100g ; Zinc = 1.81 [1.14, 2.88] mg/100g (wet weight);