Fish have stream-lined bodies to help them glide easily through the water. The predatory pike is especially slim to help it move fast when hunting its prey. It is well-camoulflaged as it lies in wait for a smaller fish to swim into its territory, which it then chases and seizes with its large, pointed teeth. The brown trout, a favourite with anglers, and the roach are both carnivorous fish, eating small invertebrates.
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