The present study contributes with data on length-weight relationship, growth pattern and
condition factor of Glossogobius giuris, a commercial fish in the Mekong Delta, based on a collection of
600 individuals caught by gill nets from March 2016 to February 2017. As the coefficient of determination
(r2) of length-weight relationships are elevated, the weights of male and female G. giuris of two sizes,
during two seasons and originating from three sites can be estimated from a specimen given length. The
goby specimens show an isometric growth, as b (2.98±0.04 SE) is close to the corresponding thresholds.
The coefficient b varies with the sex, but not with the fish size, season and site variables. Albeit the
condition factor changes with sex, size, site and month: its value is significantly higher than the favorable
environment threshold, suggesting that the species adapts well to the habitat. The findings supply helpful
data on fish biology and ecology, useful for fishery management.