Special Issue on Aquatic Animal Health in Vulnerable Environments

Aquatic animals, whether marine or freshwater animals, and whether farmed or wild, face a number of threats related to their water environment. The technological pressures, occurrence of contaminants, and climate changes are ubiquitous in the environment and cause undesirable ecological effects that are reflected in aquatic organisms. Thus, the aim of this Special Issue is to present advances in identifying and resolving challenges related to aquatic animal health in aquacultured and free-living aquatic species. A total of nine papers are published in this issue: one review and eight research articles. They relate to various aquatic species, such as shrimp, octopus, green ormer, Mediterranean scallop, brown trout, black scorpionfish, greater amberjack, and turbot. Additionally, a variety of threats are addressed, such as microplastic pollution, seasonal temperature changes, various living conditions (free-living as opposed to aquacultured), and medicated diets for farmed species. In addition, specific technological conditions in relation to the keeping of captive animals, as well as to their release and stocking activities, are described.