The current volume is an addition to "Advances in Fish and Wildlife Ecology and Biology." As in the previous volumes, this volume 5 contains two sections-the first dealing with fish and limnology and the second with wildlife. The first section includes some recent additions to our knowledge in reproductive biology, histopathological changes in inter-renal and chromafin cells exposed to sublethal concentrations of carbaryl and cartap in fish, some studies on neuroendocrinology regulation of egg maturation, culture of giant fresh water prawn, art of freshwater prawn culture in saline water, anomalies in freshwater major Indian carps, population growth and demography of Moinodaphnia in relation to algal food density, bloom events of cyanobacteria associated with fish kills, freshwater diversity of Tunga and Bhadra rivers and a review of Bhoj wetland. The section on wildlife includes five chapters on different aspects of advances made in our knowledge of bird life, another chapter deals with study of responses of thyroid, parathyroid and adrenal cortex to sublethal administration of heroin in Rattus; there is also a chapter on biodiversity resources of Bhitarkanika mangrove system. A chapter dealing with oocyte interactions during folliculogenesis in mammals has also been added. There are two chapters on studies in insects. One deals with the alterations in enzyme activities in Cockroach induced by sublethal concentrations of chemicals; the other deals with the damage caused to medicinal plants by insect pests in the Jammu Shivaliks. A chapter on new systematics in parasitological taxonomy has also been included.