| 11. | Riffle and pool habitats are favorable for many cold water fish species.
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| 12. | Their preferred habitat is shallow riffles with loose, uncompacted gravel bottoms.
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| 13. | There are numerous riffles on the creek where it flows past boulders.
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| 14. | It has pools and riffles and its bottom is cobbled.
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| 15. | Its natural habitat was riffle beds over gravel and sand.
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| 16. | Its natural habitat was riffle areas in large to medium size rivers.
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| 17. | The Middle Raccoon River has a boat ramp and a fishing riffle.
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| 18. | It inhabits swift riffles in the eastern United States and southern Ontario.
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| 19. | A Square-Metre Electrofishing Sampler for Benthic Riffle Fishes.
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| 20. | It can be found in clear riffles with little silt.
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