Physical and Psychological Suffering
The unnatural living conditions in fish farms lead to severe health problems. Overcrowding causes chronic stress, weakening the fish’s immune systems and leaving them vulnerable to diseases and parasites like sea lice. These parasites cause painful wounds, stunt growth, and disrupt the salmon’s nutrition. Many fish suffer severe injuries from infections, abrasions, or damaged gills.
Sea Lice and Harmful Treatments
Sea lice, which feed on salmon’s blood and skin, pose a significant challenge in fish farms. The industry uses treatments such as exposing fish to extremely hot water or high pressure to remove parasites. These methods are not only ineffective but also cruel; many fish die during these “solutions.” Additionally, cleaner fish, used to manage lice populations, endure poor living conditions and aggressive interactions.
In intensive farms, salmon cannot display natural behaviors. In the wild, they travel vast distances to spawn, but in cages, they swim aimlessly in confined spaces. They are unable to adapt to environmental changes such as fluctuations in oxygen levels or temperature, exacerbating their suffering.
Scientific research confirms that fish can feel pain. Studies conducted by the Universities of Edinburgh (2003) and Liverpool (2019) prove that the pain system in fish is comparable to that of mammals. Fish even exhibit long-term behavioral changes following painful experiences, underscoring their capacity to suffer.
Animal Cruelty at Slaughter
In many farms, salmon are slaughtered without stunning, meaning they die fully conscious. Even when methods such as electrical stunning or a blow to the head are used, these are often ineffective, leading to unnecessary suffering.
The environmental impact of fish farms is devastating. Waste products such as feces and leftover feed pollute the water and seabed, leading to biodiversity loss and eutrophication, which causes harmful algal blooms. Additionally, the chemicals and antibiotics used to combat diseases pollute the surrounding environment, threatening wild fish populations.