I had a new addition 3 week ago, this being a juvenile (8cm) Naso vlamingii
. Tankmates are – A. percula, C.bispinosa, P. semicirculatus, Z. scopaz
and A. straitus
I never seen what one can classify as an aggression with scalpels – but every day, usually in the evening A.straitus
patrols the whole tank, I observe him while getting close to the vlamingii
but never touch him and not only to this one. Moving on.
This fish has a very big appetite, and I feed them twice/once a day when giving them TetraMarin Granules (New BioActive Formula), and once a day when giving them frozen spinach, Artemia, Spirulina, Dried Chlorellea.
Water Parameters– NO2
– 0.2mg/l, NO3
– less then 12.5mg/l, pH – 8.5, Specific gravity – 1.018. (Tetra Testkit)
The reason for the thread – (here follows the noticing I observed)
19th October 07 - 3 grayish circles on the lower abdomen + 2 white patches (pale) on the first 2 dorsal fins and on the last 2 as well. Said this there are no signs of weakness overall, always wants to eat.
Has a 150 GB/min but he has been always very active.
21st October 07 - again no sign of stress, test indicated that there is no nitrite poisoning. Circles still present and even white patches
23rd October 07 - the white patch at the lower end of the dorsal fin disappeared – 2 faint circles (cloudy in appearance) appeared by the right side if you look at angle. Lower abdomen circle seems better - in the beginning there were 3 now there is only one, but is a bit brown (not solid) – its like 4mm in diameter
The fish as I said is not showing any signs of flashing. He is always interested in me when I come near by, and never hide. He’s always swimming around.
I did not quarantine the fish since I don’t have an extra tank for quarantine. I acclimatised the fish by placing the bag floating on water for 30min, and then gradually I added small amount of water very slowly till the bag filled up all (took me about an hour).
My tank holds 100gallons. And the salt I use is AquaMedic. No medication were used.
As one can realise from the above my question is concerned about the brown circle, can any one help me identifying what is it?
Thank you in advance