The phrase "bigger fish" often refers to someone or something that is more important, powerful, or significant than another. It is commonly used in various contexts, such as business, where a smaller company might be overshadowed by a larger corporation. The expression highlights the idea of relative importance or size within a specific environment. In nature, "bigger fish" can literally refer to larger species of fish that prey on smaller ones. For example, in aquatic ecosystems, larger predators like sharks or tuna play a crucial role in maintaining the balance of marine life by controlling the population of smaller fish. This concept illustrates the dynamics of food chains and ecological relationships.