River shrimps are very common. It wouldn't surprise me if that creek held a thousand of those shrimps. Taking out 1% every day may actually be sustainable, as it takes out grown shrimps that otherwise would eat smaller shrimps.
And that's to survive on shrimp alone. It would be foolish to try that, not only because it wouldn't be a good diet, but also because putting all your eggs in one basket definitely isn't a good idea if your live depends on it.
And of, course, he may catch other edible animals, too, such as eels (this kind of trap is still commonly used in commercial eel fishing in Western Europe; if I had such a trap, I would consider putting a dead shrimp or other meat in such a trap to attract eels)
And that's to survive on shrimp alone. It would be foolish to try that, not only because it wouldn't be a good diet, but also because putting all your eggs in one basket definitely isn't a good idea if your live depends on it.
And of, course, he may catch other edible animals, too, such as eels (this kind of trap is still commonly used in commercial eel fishing in Western Europe; if I had such a trap, I would consider putting a dead shrimp or other meat in such a trap to attract eels)