A fishway or fish ladder is a waterway constructed on or around a natural or artificial obstruction to provide a passageway for fish and other aquatic species. The construction of fishway allows a seamless migration for the aquatic species despite the obstructions like dams, culverts and waterfalls, which otherwise would have affected their migration and therefore their survival.

Types of Fish ladder

1- Pool and Weir fish ladder

2- Pool and Orifice fish ladder

3- Vertical slot fish ladder

4- Baffle fishway

5- Rock ramp

6- Fish elevator

7- Siphon fishway

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