This species is rare and has been found only in low salinity waters (0.1-0.4 psu) in the estuaries of northeast Taiwan .
Dorsal spines (total): 7; Dorsal soft rays (total): 7 - 8; Anal spines: 1; Anal soft rays: 8; Vertebrae: 26. This species is distinguished from its congeners by the following set of characters: D2 modally I,8, A I,8, pectoral fin rays modally 1,5; longitudinal scales 34-35, predorsal scales 18-21; first dorsal fin rounded, no filamentous spinous ray. Colouration: body with seven distinct black stripes, cheek and operculum with blackish brown network surrounding of 5-7 rounded, bright yellow spots, first dorsal fin with a somewhat horizontally broad black blotch, basal region of caudal fin membrane has a vertical black bar or two separate brownish black spots .Cross section: oval.
Behavioural data for Mugilogobius Flavomaculatus is currently being reviewed.
Diet information for Mugilogobius Flavomaculatus is currently being compiled.
Reproduction data for Mugilogobius Flavomaculatus is currently being compiled.
Marine; demersal. Subtropical Northwest Pacific: Taiwan.
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