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Cleaner fish biology and aquaculture applications
Cleaner fish are increasingly being deployed in aquaculture as a means of biological control of parasitic sea lice, and, consequently, the farming of wrasse and lumpfish, the main cleaner fish species in current use in salmon farming, is now one of the fastest expanding aquaculture, sectors with over 40 hatcheries in Norway alone. This book reviews and presents new knowledge on the biology of the utilised cleaner fish species, and provides protocols in cleaner fish rearing, deployment, health, and welfare. The latest knowledge is presented on specialist technical areas, such as: cleaner fish nutrition; genetics; immunology and vaccinology; transport; and more. Contributions from over 60 leading researchers and producers give an exciting mix of information and debate. Written by a team of internationally-recognised experts in cleaner fish biology, culture, and deployment this book will be an essential purchase for hatchery managers, salmonid producers, fish farm operatives, researchers, regulators, students, and enthusiasts working with, and interested in, cleaner fish.
eBook
The puffer fish
The puzzling thing about the pufferfish--or blowfish--is that it's highly toxic, yet some people consider it a delicacy. This book describes how the spikey fish got its name, how it fights off predators, where it lives, the strength of its toxins, and how a skilled chef can render it safe to eat.
Book
Health maintenance and principal microbial diseases of cultured fishes
Health Maintenance and Principal Microbial Diseases of Cultured Fishes, Third Edition is a thoroughly revised and updated version of the classic text. Building on the wealth of information presented in the previous edition, this new edition offers a major revision of the valuable health maintenance section, with new pathogens added throughout the book. Health Maintenance and Principal Microbial Diseases of Cultured Fishes, Third Edition focuses on maintaining fish health, illustrating how management can reduce the effects of disease. The text is divided into sections on health maintenance, viral diseases, and bacterial diseases, and covers a wide variety of commercially important species, including catfish, salmon, trout, sturgeon, and tilapia. This book is a valuable resource for professionals and students in the areas of aquaculture, aquatic health maintenance, pathobiology, and aquatic farm management.
eBook
Tropical fish
Tropical fish are vibrant and beautiful. Some are shy, some are curious, and some are deadly! Learn these things and more alongside beautiful, full-color photographs.
Book
Feeding aquaculture in an era of finite resources
Aquaculture's pressure on forage fisheries remains hotly contested. This article reviews trends in fishmeal and fish oil use in industrial aquafeeds, showing reduced inclusion rates but greater total use associated with increased aquaculture production and demand for fish high in long-chain omega-3 oils. The ratio of wild fisheries inputs to farmed fish output has fallen to 0.63 for the aquaculture sector as a whole but remains as high as 5.0 for Atlantic salmon. Various plant- and animal-based alternatives are now used or available for industrial aquafeeds, depending on relative prices and consumer acceptance, and the outlook for single-cell organisms to replace fish oil is promising. With appropriate economic and regulatory incentives, the transition toward alternative feedstuffs could accelerate, paving the way for a consensus that aquaculture is aiding the ocean, not depleting it.
Journal Article
The dragon behind the glass : a true story of power, obsession, and the world's most coveted fish
A journalist's quest to find a wild Asian arowana--the world's most expensive aquarium fish--takes her on a global tour through the bizarre realm of ornamental fish hobbyists to some of the most remote jungles on the planet.
Book
The potential impact of compositional changes in farmed fish on its health-giving properties: is it time to reconsider current dietary recommendations?
Assessment of national dietary guidelines in a number of European countries reveals that some are based on cohort studies, focusing on total seafood consumption, while others are based on the content of EPA and DHA, distinguishing between oily and other fish. The mean actual intake of fish in most countries is around or below the recommended intake, with differences in intake of fish being present between sex and age groups. Many people do not reach the national recommendation for total fish intake. Dietary recommendations for fish and EPA/DHA are based mainly on data collected more than 10 years ago. However, methods of farmed fish production have changed considerably since then. The actual content of EPA and DHA in farmed salmon has nearly halved as the traditional finite marine ingredients fish meal and fish oil in salmon diets have been replaced with sustainable alternatives of terrestrial origin. As farmed salmon is an important source of EPA and DHA in many Western countries, our intake of these fatty acids is likely to have decreased. In addition, levels of vitamin D and Se are also found to have declined in farmed fish in the past decade. Significant changes in the EPA and DHA, vitamin D and Se content of farmed fish means that average intakes of these nutrients in Western populations are probably lower than before. This may have consequences for the health-giving properties of fish as well as future dietary recommendations for fish intake.
Journal Article