Some reproduction aspects of the "doctor fish", Cyprinion macrostomum, were examined for the first time from the Tigris River drainage. A total of 316 specimens were caught from Gamasiab River in western Iran, at monthly intervals throughout the year from January to December 2013. Age, sex ratio, fecundity, oocytes diameter, gonado‑somatic (GSI), modified gonado‑somatic (MGSI) and Dobriyal (DI)...

considering its gobiidea and feeding fish sturgeon caspian sea highest main and the need to fecundity this fish, this study was done in babolroud and tajan rivers in mazandaran. in order to conduct the study, 197 sand goby we were caught using an electros choker machine (v300-200) in the spring of 1390 ,which was the spawning season, at the tajan river (sari) and babolrood (babol). 103 fish whi...

Population growth (length-weight relationship), and reproductive potential (e.g. fecundity, and sex-ratio) of five important fish species (‘mola’: Amblypharyngodon mola, ‘puti’: Puntius sophore, ‘tengra’: Mystus vittatus, ‘shing’: Heteropneustes fossilis and ‘taki’: Channa punctatus) collected from two important fresh waters bodies (namely Hilna beel and Beel Kumari beel) Rajshahi, Bangladesh, ...

Some aspects of the reproductive biology of the Indian squid, Uroteuthis duvauceli, were studied from June 2006 to May 2007. A total of 1200 specimens were collected from approximately 30-80m depths by trawling in 50 stations, of which 360 samples were studied for sex determination and fecundity. The minimum and maximum total and mantle length, and body weight were recorded in December and June...

this study was conducted to investigate some aspects of the reproductive system of exopalaemon styliferus (h. milne edwards, 1840) population in downstream bahmanshir river during summer, 2008. a total of 472 specimens collected from sampling site?? stations, males and females comprised 55.4% and 43.6%, respectively (14.4% ovigerous female and 30.1% non-ovigerous females). the minimum size of m...

Mature specimens ranging in weight from 47.00g to 4450g and in length from145mm to 610mm were used. Weight of ovary in the fish fluctuated from 4.0 g to 707 g with a mean value of 33.47. Absolute fecundity of samples varied from 3173 to 629230 and the relative fecundity varied in the range of 21.00 223.00 with a mean value of 91.17. The mathematical relationship of fecundity with other variable...

this study was investigated reproductive differences in fall and spring migrants of caspian lamprey (caspiomyzon wagneri) in the shirud river (southern caspian sea)in 2008. 89 and 15 specimens were sampled in in spring and fall, respectively. generally, fall migratory fish had a significantly lower condition factor (cf) compared to the spring migrants. there was significant relationship between...