When gorillas go into a market, smaller companies survive by feeding on leftovers, like pilot fish that swim safely alongside sharks.

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These little pilot fish swim around everyone else, looking for opportunities where others see disaster and sometimes getting wiped out in the process.

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The reality is these cases are frequently filed by lawyers who follow, pilot-fish fashion, behind the big class action firms.

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It said pilot whales and sun fish had also made appearances but sightings were relatively rare.

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