Fish Physiology, Volume 38 in this ongoing series, examines how the inherent potential of fish to express traits of economic value can be realized through aquaculture. Topics covered include the regulation of the reproductive cycle of captive fish, shifting carnivorous fish towards plant-based diets, defining the challenges, opportunities and optimal conditions for growth under intensive culture (including in Recirculating Aquaculture Systems), enhancing immune function and fish health during culture, identifying and managing maladaptive physiological responses to aquaculture stressors, establishing welfare guidelines for farmed fish, phenotypic and physiological responses to genetic modification, Zebrafish as a research tool, and the aquaculture of air-breathing fish.

Whether you are watching an Eider soar low over the water or listening to the iconic sound of a flock of geese flying overhead, chances are you will already be familiar with many different species of ducks, geese and swans found around the UK. But can you tell a Goosander from a Red-breasted Merganser? Or confidently distinguish between a Pink-footed Goose and a Greylag Goose? The varied habitats in the British Isles provide a home to many ducks, geese and swans that live here year-round, as well as the enormous number of birds that arrive in winter. RSPB ID Spotlight Ducks, Geese and Swans is a reliable fold-out chart with illustrations of 30 of the UK's most familiar wildfowl by renowned artist Stephen Message. - Species are grouped by family and helpfully labelled to assist with identification - Artworks are shown side-by-side for quick comparison and easy reference at home or in the field - The reverse of the chart provides information on the habitats, behaviour, life cycles and diets of our ducks, geese and swans, as well as the conservation issues they are facing and how the RSPB is working to support them - Information on successful preservation campaigns of UK wetlands and how to take part in the Wetland Birds Survey is also included The ID Spotlight charts help wildlife enthusiasts identify and learn more about our most common species using accurate colour illustrations and informative, accessible text.