
???????????????????? ???????????????? ?? ?????????????? ???????????????????? ??????????????????????, Gobio uranoscopus (Agassiz, 1828), ???? ?????????????? ?????????????????????????? ???????????? ?????????? ???????????????????? ???? ?? ?????????? ?????????????? ?? ?????????????????? ????????????????, ?? ?????????????? ????????, ?????????????? ???????????????????? ?? ?????????????????????? ???? ???????????? ???????????????? ???????????????????????????? ?? ????, ?????????????? ???? ?????????????? ???? ?????????????? ???????????????? ??????????. ???????????????? ???????????????????? ?? ?????????????????????????? ???????????????????????? ?? ???? ?????????????????? ?? ???????????? ??????, ?? ?????????? ???????????????????????? ???????????? ???????????????? ?????????? ?? ??. ????????. ?????????????? ?? ?????????????? ??????????????????????.
?????????????????????? ???????????? ?????????????? ?????????????????????? ??????????????????????, Gobio uranoscopus (Agassiz, 1828), ???? ?????????? ???????????????????????? ???????????? ???????????? ?????????????????????????? ???? ?? ?????????? ?????????????? ?? ???????????? ???????????????? ?? ?????????????? ????????, ???? ???????????????????? ?? ???????????????????? ?????? ???????????? ???????????????? ?????????????????? ???? ????, ?????? ???? ???????????????? ?????? ?????????????? ???????????????? ??????????. ??????????????????? ?????????????????? ?? ???????????????? ???????????????????? ???? ???????? ?????????? ?? ???????????? ????????????????, ?? ?????????? ???????????????????????? ???????????? ???????????????? ???????????? ???? ??. ????????. ???????????????? ?? ?????????????? ??????????????????????.
Some variables of stone gudgeon, Gobio uranoscopus (Agassis, 1828) were defined for the sex differentiates before and after spawning in different ponds, and body measurements which vary depending or not on the stage of the gonads maturity. The absolute and relative fertility and change with the growth of fish was found out, as well as the maximum index of maturity of females from river Rica. Spawning of is discovered and described.
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