Tagging of Fishes

Tagging has been used extensively to study fish population dynamics, life cycle features, marine conservation and regional ecology since the early twentieth century. Traditional mark-recapture procedures, which include marking individuals and then retrieving them through fisheries or surveys, provided a basis for determining critical characteristics such as survival rates, migratory lengths, growth trends, and fishing mortality. With advancements in biotelemetry, satellite communications, and microelectronics, tagging has become a sophisticated discipline that currently supports ecosystem-based management and conservation techniques (Thorstad et al., 2013). The essential premise is to attach or implant a unique identifier a "tag" to each fish, allowing scientists to follow their movements, behavior, physiology, and interactions with their environment throughout time. This strategy delivers empirical, longitudinal data that would otherwise be difficult or impossible to gather using standard sampling approaches.