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Re: Amazon diseases



Kathy Olson wrote:
> 
> Marco and Diogini
> 
> Thanks for your help
> 
> On Sun, 28 Mar 1999, Marco Lacerda wrote:
> > I've seen this "fin lice" also in bigger cichlids, like Geophagus,
> > Acarichthys and Gymnogeophagus (the later is not from Amazon). It seems
> > to be a common parasite through South America.
> > In small quantities of fish, like 5 to 10 fishes, you can remove the
> > "lices" by taking the fish out of water, and using a diluted solution of
> > formaline (I used FMC, a combination of malachite green + methylene blue
> > + formaline) applied directly on the lice (with the help of a piece of
> > cotton at the end of a stick; I don't know the English work for this
> > object, but I think you will understand it).
> > Sometimes the lice was "drunk" enough to be then removed from the fins;
> > when not I repeat the treatment days later until the lice can be
> > removed.
> 
> I will have to hit our local fish sotre and get some formalin (or
> chemical supply house)
> 
> >
> > Apistos, handnets is the best way, as they live mostly inside forests
> > (some of them, sure). When living in the "praias" (sandy river shores)
> > two people can use a seine, it is very effective.
> > For tetras, it depends on their swimming habits; for tetras like
> > Hatchets, you just need to use your seine on upper level, no need to use
> > it up the river bottom.
> 
> > Collecting is always a great experience. By the way, the Cory you find
> > at Rio Negro is Corydoras hastatus, not C. pygmaeus.
> > Lots of interesting fishes, like Aspidoras pauciradiatus, Helogenes
> > marmoratus (small marbled catfish swimming at middle water), Gnatocharax
> > steindachneri, Hemigrammus stictus (green, caudal peduncle cherry red),
> > just to mention a few not normally found at petshops.
> 
> The cory we found was actually on the Amazon not the Negro. Has a line
> down the body.  I will show you pictures, originally Karan and I were
> debating on the boat between hastatus and pygmaeus.  Any help on IDing any
> of these guys is greatly appreciated.  I have one roll of film ready to
> develop and will work on another as soon as work gives me time to be home.
> 
> I think we may have had one Hemigrammus stictus, it had a cherry red
> peduncle spot, I will have to recheck.

Yes, He. stictus is found in many places in Amazon basin, including the 
Rio Negro. 

> 
> Thanks Again,
> Kathy




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