02-27-2013, 12:03 PM
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"Brown Waterscorpion (Ranatra fusca)
Description: 1 3/8" - 1 3/4" (35-45mm) with 7/8" (21mm) paired tail-like breathing tubes. Very elongate, sticklike. Pale to dark yellow brown. Pronotrum narrow and necklike, no wider than head at compound eyes. Slender middle and hind legs each about as long as body.
Habitat: Bottoms of shallow fresh waters, among vegetation and debris.
Range: Throughout southern Canada and the United States.
Food: Body juices from other insects, tadpoles, salamanders, and fishes.
Life Cycle: Eggs are thrust into soft, living or dead tissues of aquatic plants, hatching in 2-4 weeks. Nymphs mature in about 5 weeks. Adults overwinter.
This waterscorpion can puncture a person's skin with its beak. It injects a salivary secretion rich in anesthetizing substances that tranquilizes prey and initiates digestion."
-from Nation Audubon Society's Field Guide to Insects and Spiders
If it can puncture your skin, I wouldn't trust it with your fish.
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