1. Improve Fish Health: The Fish Tunnel for Aquarium not only enhances the aquatic comfort of your fish and shrimp by creating a closetonature habitat, but it also provides a safe space buried deep under the sand, allowing your small aquatic creatures to find their own private territory. 2. Ideal Hiding Place: Encourages fish to display natural behavior, providing them with a burrowing and hiding area that enhances their sense of security. It also serves as a quiet and stable spawning site, ensuring healthy growth and promoting natural reproductive behavior for a thriving aquarium. 3. Easy Entry and Exit: Designed with a smooth curve, this fish tunnel ensures easy access, allowing fish to easily enter, exit, and shuttle without hindrance, while preventing dirt accumulation. 4. LongLasting and Safe: With a strong structure, our fish tunnel is designed to resist deformation and cracking during longterm use. Made from quality materials, it's able to withstand water pressure and the friction of sand and gravel, ensuring no harmful substances are released.