1Department of Aquatic Environment, College of Fisheries, Guru Angad Dev Veterinary Animal Science University, Ludhiana-141 004, India
2Department of Veterinary Anatomy, College of Veterinary Science, Guru Angad Dev Veterinary Animal Science University, Ludhiana-141 004, India
Department of Aquaculture, College of Fisheries, Guru Angad Dev Veterinary Animal Science University, Ludhiana-141 004, India
*E-mail: vaneetinderkaur@gadvasu.in
Online Published on 26 September, 2023.
The present study was carried out in glass aquaria (50 liter) for 120 days to assess histopathological alterations in major organs of freshwater ornamental goldfish, Carassius auratus (L.), variety Shubunkin reared in inland saline water in different salinity levels ( 2 to 10 ppt/‰) prepared from stock inland saline water (12 ‰).After proper conditioning, fishes were acclimatized (gradual increase in salinity @ 1 ‰ at 1-hr interval) to different salinity levels. After 4 months of salinity exposure in terms of histopathological alterations revealed deviation from normal responses/alterations beyond 4 ‰. The study presented alterations in gills, kidney and liver, which increased gradually from 2 ‰ up to 10 ‰. Although fish was capable of adapting and growing up to 6 ‰ in inland saline water, however, <4 ‰ can be considered safe with respect to overall performance of fish especially histopathological alterations. The results of present study suggest <4 ‰ as safe level to rear gold fish in inland saline water.
Gold fish, Histopathological alterations, Inland saline water, Salinity stress
