[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Shrimp Still Dying
Caradina japonica are usually found in brackish water or water with a higher
pH 7.8 or above. They are susceptible to trace elements such a iron and
copper. Small amounts of iodine or other traces are not so damaging. In the
course of a days collecting I can trap inexcess of 500 of these shrimp in L
Tsuchira or in the Tone, Ara or Sumida river systems. The water where I find
them is often brackish or has a high pH and is typically choked with algae.
Losses are high and I can expect a 50% mortality-that's why I was offering
these things on Aquabid at $1.50 each (you spend a day wading around in
smelly water and mud, you definitely want some return on your effort)
Conversely, the Neocaradina sp are strictly freshwater and besides being
easier to keep and breed, are more attractive. Their shortcomings are that
they are much smaller (easier prey for medium sized fish) than the Amano
Shrimp and don't consume algae in as large a quantity. They do breed like
rabbits if well fed and cared for and won't resort to cannibalism if well
fed and provided with lots of hiding places for the young.
>Aren't shrimp more susceptible to excess CO2 than most
>fish? They certainly seem to come out of hiding when the
>CO2 gets past 30ppm or so. Levels below that shouldn't be
>a problem, though.
>Aren't they also more susceptible to the presence of some
>trace metals and the absence of others?
SMG Holdings Co., Ltd.,
Deux Chateaux Blanc 2-303,
1356 Kobuchi, Kasukabe,
MSN Photos is the easiest way to share and print your photos: