Hi, thanks for the question! All life stages of the shrimp may be prey for many native fish, some more are the California roach, threespine stickleback, and riffle sculpin (these feed on newly hatched shrimp.) Young coho salmons, steelhead trout, and Sacramento squawfish also prey on shrimp. Along with fish are also other aquatic verb ate predators such as western pond turtles, salamanders, and newts. Some invertebrate predators are water scorpions, predaceous diving beetles, and dragonfly and damselfly nymphs. And of course humans.

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Probably varies, but I imagine that various fish and crayfish eat them, probably snapping turtles, too.