Clownfish diseased or ok??

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john - 23 Oct 2004 23:29 GMT

Have 4 clowns and 1 Purple Tang in 100gal tank with sump, also inverts, soft
& a few hard corals. Water parameters are good, KH=12, salinity 36ppt,
nitrates around 5mg/l, Ca=440mg/l, Mg=1320 ... lots of flow, metal
hailides/actinics. Tank established for 11 months, clowns in tank for 4
months now with no prior problems.

Clowns are all tank bred Oscellaris. Over the last few weeks 3 of the clowns
have developed black spots all over their bodies (approx 3-6mm dia)
appearing somewhat mottled. They all sleep inside my sea mats/button polyps
(Zoanthus) so suspect this may be the cause. The other clown sleeps inside
my Clam (don't ask me why) but has no spots!!

Everything else is thriving .... any advice please??

John C

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kryppy - 24 Oct 2004 04:21 GMT

>Have 4 clowns and 1 Purple Tang in 100gal tank with sump, also inverts, soft
>& a few hard corals. Water parameters are good, KH=12, salinity 36ppt,
[quoted text clipped - 9 lines]
>
>Everything else is thriving .... any advice please??

I believe the black spots are actually stings. My clown gets them when
he sleeps in some big harry mushrooms I have. It is nothing to worry
about.

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Marc Levenson - 28 Oct 2004 05:42 GMT

It is caused by the zoanthids, and your clowns will be fine.
It just doesn't look pretty, but I've never heard of any
dying from this.

Marc

> Have 4 clowns and 1 Purple Tang in 100gal tank with sump, also inverts, soft
> & a few hard corals. Water parameters are good, KH=12, salinity 36ppt,
[quoted text clipped - 11 lines]
>
> John C

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Pet Forum / Aquaria / Marine Reef / October 2004

Clownfish diseased or ok??