The formation, or modification of any river structure which impedes the natural movement of fish in a watercourse usually requires the provision of a fish pass.

​ANF Consulting have designed numerous fish passes including obtaining EA consent and National Fish Pass Panel approval with provision for not only salmon and sea trout but coarse fish too.

​Eels have suffered from a catastrophic collapse in numbers in recent years and their return to the UK's rivers is a key environmental requirement. Unable to use traditional fish passes separate provision is usually required for eels, elvers and also lamprey. We have designed all for a variety of sites and have recently designed and built the largest Larinier fish pass in England at Brotherton Weir on the River Aire near Leeds.

​​​Specialist Consultancy Services

ANF consulting lTD