Malcolm MacIver and colleagues at Northwestern University have created an "artificial electric-field sensing system that could ultimately give robotic subs the same additional sensory capabilities" as found in weakly electric fish.

ENGADGET: Robotic submersibles take on fish-like sensing abilities

On Thursday, the agency's fisheries and ecology team isolated a 100m area of the river next to Ravensbury Park in Merton and used equipment which generated low voltage electric currents to check how many fish survived.

BBC: NEWS | UK | England | London | Toxic spill in river kills fish

The fish will be stunned with an electric pulse, netted and re-homed on another section of the canal.

BBC: Fish removed from Bath canal for lock repairs

The Canal and River Trust said the fish, including roach, perch and bream, will be stunned with an electric pulse, before they are taken to Erewash Canal.

BBC: Fire-hit Erewash canal set to be restocked with fish

Striped bass are a big marine fish concern of the DEC not only because they are a prized game fish for recreational anglers, but also because they are full of PCBs, thanks to the General Electric plants upstream on the Hudson that pumped the contaminants into the water for 30 years until 1976.

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