The aim of this investigation was to study macroscopic and microscopic structures of ovaries in Barbus grypus of Karoon river and their changes during annual maturation cycle. For this purpose, 120 adult  B.grypus with a mean weight of 835.0 to 1012.0 g, were caught from Karoon river and transferred alive to the laboratory. After biometrical studies, the weights and morphological appearances of...

Morphometric of examination gonads Liza carinata were performed for one year (October 1995 – September 1996) to study the maturation development. Monthly variation in gonado somatic index (GSI) noticed, that started with low values during October and November. Significant increase was recorded period December - April peak February (3.59 males & 9.33 females) followed by a significant declin...

The effects of an increasing downriver pollution gradient on the reproductive system of Astyanax fasciatus were investigated in the Rio dos Sinos, RS. The comparison of mean oocyte diameters, gonadal indices and gonado-somatic relationships of specimens captured in polluted areas with individuals from unpolluted reference sites revealed a significant decrease of these parameters with increasing...

Japanese Threadfin Bream is a demersal fish commonly found around artificial reefs. Food availability in the reef ecosystem essential for sustainability of this species. Hence, research aimed to determine several aspects bio-reproduction caught (bioreeftek). Samples were taken using handline fishing, twice month (April-July 2020) Pitu Sunggu Waters, Makassar Strait. The samples observed its rep...

pattern of feeding and reproduction of amblypharyngodon mola (hamilton, 1822) was studied in two floodplain lakes of north 24 parganas districts of west bengal in india during 2011.  results indicated that the fish exhibited a predominantly herbivorous diet with algae as the main content of gut. a long, thin walled, coiled gut and closely packed filamentous gill racker suited this feeding habit...

Life history plasticity can be a strong predictor of the establishment and invasion success introduced fishes. Here, life-history traits four P. parva populations in adjacent ponds Southern England were measured throughout 2013 to determine timing length their reproductive season extent trait plasticity. The relative abundance (as catch per unit effort) was similar, with low variability relatin...

This study was conducted to assess the reproductive biology and early breeding behaviour of female Oreochromis niloticus reared in monoculture and polyculture with Clarias gariepinus in earthen ponds for 8 months. Results revealed no significant difference in length at first maturity (L50) between females reared in monoculture and polyculture systems. Similarly, no significant differences were ...

The present study was carried out from December 2007, during which to November 2008 more than 210 fish (Barbus barbulus) were caught and measured, including, 57 males, 64 females 89 immature fishes. Maximum minimum total lengths 885 mm respectively. weight 8460 g 99 length-weight relationship Y=0.00002 L2.90 (n=57, R2=0.85) for Y=0.000002 L3.22 (n=64, R2=0.87) Y=0.00005 L2.96 (n=210, R2 =0.90) ...