yeah mate, near as i can tell these stools were from a blue diamond that went down hill after an asian red turk was introduced to the tank (after a 4 week quarentine).
will try and get more photos of the 2 fish in question, i saw the red turk passing white stools last night, buts its a good size and healthy, eats like a pig, but isn't the biggest fish in the tank (the way it eats you assume it would be I guess that should have tipped me off).
It got 2 doses of levimenisole while in quarentine 3 weeks apart, i guess i didn't break the cycle, wont make that mistake again.
G'day all, bad news, my rose red fry are VERY sick took a look at some stools under the work scope and i think i found every internal paracite known to mankind
first off the worms the live worms are about 1mm long
the end result of this is 14 fish dead, and as luck would have it all the bigger (3 inch) rose red fry are gone as are all the red turk fry.
I've treated with OCTOZIN (8.5% dimetridazole) at 3x the bottle dose, have also started weekly treatments of levimenisole at 2mg/L no more deaths after a week and stoll samples show only eggs and DEAD protozoa (in the 1000's). hopefully the remaing 11 fish will make a full recovery, all are eating again, freeze dried blackworms and live brine shrimp, they still have no taste for beefheart or any dry foods (specrun grow color bits breeders blend flake).
again if anyone can help me id these bugs it would be greatly appreciated
this is driving me up the wall fish were looking great now some have gone down hill again, a quick look at worst fish poo shows 1000's of these bugs.
so far fish have had treatments with prazi (bottle dosage three treatments 5 days apart) 3 doses of levimenisole (1 week apart) a 2x dose of octozin (2x the bottle dosage adminstered as per instructions days 1 2 and 3) and metro in the food,
Check out this webpage, it's got some scope pics of various parasites, some of them look similar to yours.. but it's hard to be sure http://thegab.org/Links/UFla/Parasites.html
Your picture protlowb.jpg looks similar to Protoopalina symphysodonis on that page, the size seems right and it's a gastro tract parasite.. so could be right
The worms & eggs look like they could still be Capillaria, your microscope is picking up much more detail than mine and the pics in the sites I've linked.. but they sort of look similar to me
Sorry I can't help more... too much of a microscope newbie myself... at least that's my excuse
As for what to do.. to be honest I don't know
I guess you could try making the environment hostile to the bugs like maybe dropping the pH down quite low
Something I've been thinking about trying is feeding rocksalt. I saw this done in a discus book and was surprised Discus would even eat it. I imagine it would get concentrated salt into the intestinal tract and most f/w bugs don't like high salt concentrations