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-They're one half inch in length -They have cylindrical bodies -Widest part of the body is the back (posterior) -They have fan-like appendages coming from their head -They prefer cold running water -They are usually found attached to rocks, wood, and other vegetation by the end of their abdomen |
Tolerant Indicator Species | Leech | Pouch Snail | Blackfly Larva | Aquatic Worm | Lung Snail | Midge Larva |