Biological aspects (length frequency distribution, length-weight ratio, sex
ratio, allometric growth, Fulton's condition factor) of Upogebia pusilla
were studied in Tivat Saline (Tivatska solila), Boka Kotorska Bay in 2019. A
total of 1,415 individuals were collected. The total length of all studied
individuals ranged from 27 to 55 mm (8 and 20 mm CL), while the total
weights ranged from 0.29 to 2.56 g (the total length of males ranged from 27
to 51 mm, non-ovoid and ovoid females ranged from 27 to 51 mm and 30 to 55
mm, respectively; the weights ranged from 0.29 to 2.52 g, 0.34 to 2.52 g and
0.47 to 2.56 g for males, non-ovoid and ovoid females, respectively). The
overall female:male ratio was 1.2:1. Egg-shaped females were recorded from
April (74.3%) to June (23.8%), with a peak in May (91.4% of all females).
Males dominated in July (66.4%). The relationship between CL and W was
negatively allometric in both males and females and in all sampled
individuals. Fulton?s condition factor was higher only in females during the
breeding season, while there were no significant differences between males
and females during the rest of the year. Since this species is mainly used
as live bait for commercial and sports fishermen, the results of this study
would be useful for the sustainable management of this species.