It was found that pulsed DC output does not adequately sample for black carp, Mylopharyngodon piceus (15 and 120 Hz).  However, 60 Hz AC output was successfully used to collect black carp.

In a field survey, black carp were surveyed with 60 Hz AC output in rivers at sites 1.00 river miles apart.    Precise locations were identified with global positioning systems (GPS).  Each station was sampled by navigating a boat-mounted electrofisher downstream parallel to the shore and usually 4-15 feet from the bank.  Water depth was 3-12 feet.  Sample duration was 10 minutes per site.

This is an excerpt of an email suggesting Asian Carp capture through the use of both Fyke nets and electrofishing simultaneously

Following deployment of trammel and mini-fyke nets, personnel should
electrofish surrounding waters.   Asian carp are very
sensitive to the electric current in the water, causing them to rapidly
move away from the current.  It is therefore recommended that immediately
following deployment and as soon as possible before retrieval of the nets,
electrofishing should occur for approximately 15 minutes in waters adjacent
to the nets.  The assumption is that the electric current will drive the
Asian carp into the trammel and mini-fyke nets. Therefore, beginning with
August 2003, electrofishing should be added to the Asian carp monitoring
program.