Hard to come by! A practical guide to identifying the building blocks of river ecosystems, an essential resource for anglers, ecologists and nature enthusiasts wanting to understand South Africa’s fresh water systems. It focuses on the identification, ecology and behaviour of aquatic invertebrates – the insects, crustaceans and other tiny creatures that form the diet of fish and indicate river health. Packed with clear illustrations, concise descriptions and user-friendly keys, this guide makes it easy to identify species in the field and understand their role in the ecosystem. Perfect for improving fly selection, monitoring river health, or simply exploring aquatic biodiversity. Perfect for: fly anglers wanting to match hatches and improve catch rates, ecologists and students studying fresh water ecosystems, nature enthusiasts and river explorers, anyone interested in South African fresh water biodiversity. Good condition. Softcover, 21cm x 16cm, 150 pages.