Tony
>
> Those in favor of having the option to use black carp gave the following
> arguments: First, there is no known therapeutant for the trematode and
> chemicals that control the snail populations are not FDA approved for use in
> foodfish. So currently, the black carp is the only known method of complete
> snail control for the trematode in question. While many argue that there are
> native species such as the redear or shellcracker sunfish which are capable
> of controlling snail populations, research has demonstrated that redear
> sunfish do not adequately control snail populations in ponds. Redear avoid
> snails with hard shells and their mouth gape size limits the size of snail
> they can consume.
> The black carp is the only fish species that is morphologically designed to
> crush snails with hard shells and has an adequate gape size.
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