Bird Fish Nest Block 'Σ "Sigma"'

You can freely choose the slope! This birdfish nest block can be used not only as a fish nest but also as a fishway.

This is a fish nest block that has a shape resembling a cut top slab and upper side walls of a box culvert. It creates natural-like depressions, making it suitable for the ecological environment of aquatic life. The block has good water and light permeability, making it conducive to the growth of aquatic plants, algae, and plankton. The inflow and outflow of sediment is relatively easy, which helps prevent functional degradation. By laying stones on the bottom slab, a natural environment is formed, suitable for the activities and spawning behaviors of aquatic life. Its stepped structure helps prevent water accidents caused by falls and slips, and provides a platform for cleaning operations within rivers. Patterns can be added to the front wall, harmonizing with the landscape. The slope can be freely selected (1: 0.5 to 2.0). Dead water areas are conducive to the growth of reeds and other vegetation, creating environments for bird nesting. It is easy to install and does not require specialized skills such as those needed for block work. It can be used not only as a fish nest but also as a fish passage.

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