Fish ladders are completely ineffective [1]. [1] https://conbio.onlinelibrary.wiley.com/doi/full/10.1111/conl.12000 https://conbio.onlinelibrary.wiley.com/doi/

Fish ladders are completely ineffective [1]. [1] https://conbio.onlinelibrary.wiley.com/doi/full/10.1111/conl.12000 https://conbio.onlinelibrary.wiley.com/doi/full/10.1111/conl....