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Re: [Killietalk] Killietalk Digest, Vol 49, Gammarus
Gammarus are ubiquitous and occur in virtually every body of fresh water that has aquatic plant growth. So it is easy for most of us to collect them locally. They are too hard shelled for most tropical fish to eat but they are always important food items for trout where the trout are managed as a trophy or quality fishery. The trout that eat these have salmon red flesh and are delicious.
I have no idea whether they are truly worthwhile to use as a scavenger to help dispose of bad killie eggs. I think that trying to find an invertebrate that will help in this way is too unreliable a method to count on. I guess more experiments are necessary to determine the feasibility of this "biocontrol" method. In annual egg incubation in peat there would also be the issue of the dead inverts decaying and making matters worse.
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