Estuarine fish are species that inhabit estuaries, which are coastal areas where freshwater from rivers meets and mixes with saltwater from the ocean. These fish are adapted to varying salinity levels and often thrive in the rich, nutrient-dense waters of estuaries. Common examples include striped bass, flounder, and mullet. Estuaries serve as vital nurseries for many fish species, providing shelter and abundant food sources for young fish. The unique environment supports a diverse ecosystem, attracting not only fish but also various birds and marine life. Protecting estuarine habitats is essential for maintaining healthy fish populations and overall biodiversity.