Name : Prof. Dr. Nasser A. Al-Asgah
 Present Academic Rank : Professor Of  Ichthyology College Of Science, King Saud University, Riyadh, Saudi Arabia
 Present address: Department of Zoology, College of Science , King Saud University , P.O.Box 2455.
Riyadh 11451,Saudi Arabia
Email: alasgah@Ksu.edu.sa
Advanced consideration of the aquatic ecology of aquatic animals species emphasizing current issues which include: community structure, population growth, population regulation, dispersion,…
Advanced study of nutrients requirement an metabolism of fish in various physiological conditions, factors affecting the nutrients requirement, interaction of protein fat and carbohydrate…
general principles of fish culture, common procedures of tilapia , catfish, carps culture Aquaculture economics.
Nile tilapia (Oreochromis niloticus) weighing 51.66 ± 2.42 g were exposed to 0%, 20%, 40%, and 60% of LC50 to either lead nitrate (Pb(NO3 )2 ) or copper sulfate (CuSO4 ) for 30 days. The Pb(NO3 )2…
The study evaluated the nutritional quality and investigated the heavy metals concentration in muscle tissues of five commercially important marine fish species, including brownspotted…
Waterborne herbicides are stressful agents that threaten the productivity and safety of finfish species. In this study, the toxicity impacts of atrazine (ATZ) and the protective role of…

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