author(s)
Rajinder Kaur and RN Ram

abstract
An experiment was conducted to study the effect of temperature fluctuations on the embryonic development of Labeo rohita. The freshly laid eggs collected from hatchery were exposed to different temperatures to assess its effect on their complete embryonic development. The egg development from hatching up to larval development was monitored closely in the laboratory. Eggs were exposed to variable ambient temperature (30-32 °C) and non-ambient temperature of (20-22 °C) to determine the effect of temperature on the developmental rate. All the aspects related to embryonic development were closely monitored under a microscope. It was found that egg hatchability was more at ambient temperature (30-32 °C) in comparison to the non-ambient temperature. Furthermore, the duration of egg incubation and the developmental rate increased with increasing temperature.