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These include seine netting (lakes), three-catch depletion by electric fishing both by wading and aboard boats (streams and rivers) and trawls (large lakes and rivers). Deep lake surveys can be undertaken by a well-respected specialist in hydroacoustics. We also occasionally use more qualitative methods such as shoreline electric fishing (lakes and rivers), fyke nets (lakes and ponds) and angling catches (all habitats) to provide information on specific parts of the fish stock. We offer point abundance sampling by electric fishing (PASE) in shallow lakes, wetlands, streams and rivers. This method is particularly efficient in vegetated habitats where it becomes virtually the only means of generating a quantitative estimate.