A Nin Town & Country (January 25) mentioned jellyfish shutting down a Swedish nuclear power plant, reminding me of when my father was demobbed and we moved to Kendal. The town’s water came from Killington Reservoir, but, one summer, the flow dried up—freshwater shrimp had bred rampantly, clogging the outflow.
Trout were introduced to control the shrimp and all was well, until about three years later, when the flow failed again—the older trout were now eating the younger trout, which made an easier meal than shrimp. The solution? A limited number of rod licences, of which my father had one. Balance of Nature restored—deliciously. Tony Douglass, Surrey