Stress Exposes the Truth

Unusual physical changes in fish, such as reddening of fins, can indicate stress and potential captivity, prompting investigations into their origins. The discussion highlights the application of stable isotope analysis as a scientific method to determine the migratory patterns or diet of animals, which could provide evidence for claims concerning the captivity and transport of fish. This technique has broader applications, including fraud detection in food products, underscoring the importance of scientific validation in environmental and food authenticity issues.