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My leopard wrasse (M. meleagris) decimated the population of vermetid snails. It actually first started picking up small colonista snails. When colonista snail population dropped, leopard gained interest in vermetid snails.
Leopard wrasses are long known to be snail eaters. They have been used by many to control parasitic pyramidellid snails. However, this is the 1st time I seen one eating vermetid snails. I had others that never showed any intrest to vermetid snails, but this guy loves to eat them.
Of course like any predator-prey situation, it did not wipe them out. There are still some at places that leopard cant reach. But the population is greatly reduced.
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