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Re: Keeping C. japonica...Alive :)
In a message dated 7/31/99 1:07:42 AM Pacific Daylight Time,
Aquatic-Plants-Owner at actwin_com writes:
<< Just thought that I had to bring up all the negatives on these $%$ shrimp.
I'm sure that ymmv. I have tried them twice. My tank parameters are: pH
4.5, temp 82F, no other problems. >>
Hehe. Believe it or not, 4.5 is about the pH of beer. And 82 F is a little
warm even for most tropical fish. C. japonica are cultivated in Japanese
marshes where temperatures stay pretty cool.
<< Don't know, they never lived long enough for me see a difference. I had
in a 125 gallon, and in one week, they were gone. I had 8 in a 15 gallon
in two weeks, they were dead. >>
Rich, I'm not surprised your shrimp died. That was sorta blunt huh? As with
any aquatic plant or fish, certain parameters need to be met by the aquarist
in order to keep C. japonica comfortable...or at least alive. For those of
you who want to try these awesome little algae eaters, I've prepared a little
mini-faq from tidbits I cut and pasted from
http://www.thekrib.com/Fish/shrimp.html#19Ryan. Good luck in all you shrimpy
C. japonica are very tolerant when it come to water types. Since they come
from swamps they can also tolerate different salinity's. And since C.
japonica originates from a swampy/marsh region with brackish conditions I
would guess that a pH well above 7 is also fine. In contrast, they tend to
die at a pH under 6. They are not tropical and die when the temp gets over
30C. A temperature between 15-28C is optimal. Shrimps are more sensitive to
excess CO2 than fish. ADA recommends observing them to determine whether CO2
is adversely affecting your shrimp. (They are usually busy picking things up
to their mouth. When CO2 levels become excessively high, they become dull or
stop moving the arms.) They often carry eggs, but are hard to reproduce in
most planted tanks since they need brackish water for breeding. Two thing to
point out is that Yamato numa-ebi are very sensitive to ammonia/ammonium, and
heavy metals. Heavy metals will interfere with their molting process and
cause them to die. Ammonia and ammonium are just poisonous to all living
thing. Other than these simple rule C. japonica require no other special
<< I'm not bitter though.......just wiser. >>
I hope now, your even wiser...
Finally, if any of you are interested in breeding C. japonica, e-mail me
off-list and I'll send you some sites with a lot of useful information.