FAQs about Bristletooth Tangs, Genus
Ctenochaetus
Trauma FAQs on
Bristlemouth Tang Disease:
Ctenochaetus Disease 1,
Ctenochaetus Disease 2,
FAQs on Bristlemouth Tang Disease by Category:
Diagnosis,
Environmental,
Nutritional,
Social, Pathogenic
(plus see
Tangs/Rabbitfishes &
Crypt),
Genetic,
Treatments
Related Articles: Ctenochaetus, Naso,
Related FAQs: Ctenochaetus Disease 2, Tangs/Rabbitfishes & Crypt, Ctenochaetus Tangs 1, Ctenochaetus Tangs 2, Ctenochaetus Identification, Ctenochaetus Behavior, Ctenochaetus Compatibility, Ctenochaetus Selection, Ctenochaetus Systems, Ctenochaetus Feeding, Ctenochaetus Reproduction, Surgeons In General, Tang
ID, Tang
Behavior, Compatibility, Systems, Feeding, Disease,
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Surgeonfishes: Tangs for Marine Aquariums
Diversity, Selection & Care
New eBook on Amazon: Available
here
New Print Book on Create Space: Available
here
by Robert (Bob) Fenner |
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Flame fin Tomini tang
5/19/19
Just purchased a flame fin tang and has been in QT for 4 days. I have
noticed that the fish is not eating anything, wants to but doesn't.
He/she looks to have something in its mouth.
<Mmm; a growth... from... a physical trauma? Not uncommon>
I have asked on a couple different forums but only got the usual "don't
buy fish from there" instead of any type of help. The only way I can
describe it is, it makes the same motions that cichlid does when it has
babies in its mouth. I can't really see into its mouth since it won't
face me. Doesn't scratch, but does twitch a little when it looks like
its trying to keep whatever in its mouth. I wondered if it had a piece
of the substrate from the store in its mouth and its stuck. It is thin
and would like to see it eat something. I have been putting Nori strips
rubber banded to a square frag plug and also Mysis shrimp soaked in
Selcon. Any ideas or suggestions?
<To continue to try offering different foods... am a giant fan of
(perhaps surprising) good quality, highly palatable dried prepared
foods. Hikari and Spectrum pellets (yes)... offered a few times daily>
Thanks for any help you can give!
Stacey Reagan
<And do read on WWM re Ctenochaetus spp. foods/feeding/nutrition FAQs.
Bob Fenner>
Tomini tang mouth injury
5/15/19
Good morning,
<Morning Cindy>
This Tomini tang has been in my 75-gal reef for about a year and a half with no
issues. I noticed yesterday that he was hiding in the rocks and didn’t come out
for Nori as usual. During last evening’s feeding he chased food and tried to eat
but his mouth seems stuck open and maybe a little swollen – it’s hard to say.
<Could be a physical trauma or something stuck in its mouth>
Today he is swimming in the open in a sort of bobbling fashion. His fins are
clamped (I think), he is clearly in some sort of distress. Not picking the rocks
or glass at all. Tankmates are several different species of wrasse, a recently
added Eibli angelfish (I have not seen the two interact much, they have avoided
each other though the Eibli has been aggressive toward other tankmates), a
couple clownfish. Some smaller, innocuous fish, a BTA and a mini carpet ‘nem.
There are no other signs of disease – no spots, gills not red, etc. All other
tankmates behaving as usual.
<How about your water quality, maintenance practices...sometimes (more than we
thought) it could be environmental>
I’m concerned, clearly he’s in distress and the other fish (notably 2 of the
wrasses and the angel) keep swimming by him.
<Are you sure these fish are not bothering the tang at all?>
I am hesitant to remove and stress him further unnecessarily but don’t want
anyone to get hurt.
<I recommend you reduce stress by dimming the lights for a couple of days and
see if condition is reverted, also try feeding with Spectrum 1mm pellets,
perhaps it will be easier for the tang to swallow than the Nori until it resumes
normal feeding.>
Also, if there is treatment I would initiate it but not sure what, if any.
<I wouldn’t treat, there are no clear signs of a disease.>
Please share your thoughts.
Gratefully, Cindy
<Hope this helps, Cindy. Wil.>
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Re: Tomini tang mouth injury
5/16/19
Thank you for the suggestions I turned the lights down to less than half, and
fed some 0.5 and 1.0 mm Spectrum. The Tomini definitely was able to get a couple
of the 1.0 mm so I will continue with that for a couple of days. His swimming
seems improved and his fins less clamped, so that’s good I guess.
<Ahh good>
I don’t suspect aggression from the wrasses, they have all been in the tank
together since I got the Tomini well over a year ago (ish). The Eibli, however,
is new and is quite the jerk.
<Could be>
I’ll be re-homing him soon. I haven’t seen him go after the tang, and the tang
is quite a bit larger, but I wouldn’t be surprised.
I have been suffering coral losses for several months without knowing a cause so
SOMETHING is going on regarding water quality but I’ll be darned if I can figure
out what it is. I test Alk, Ca, Mg, NO3, PO4 weekly or more and they are all
within generally accepted limits for a reef tank. I mailed off a test, the only
really notable outliers were low Iodine and Boron and high Lithium. I am strict
with my 15% weekly water changes. If there is something amiss with my water
quality, I can’t find it ☹
<Have you tried with another test kit? Reagents go bad with time and give
erroneous readings, temperature and salinity also play an important role in the
health of corals. >
As always, thank you for sharing your knowledge. I will update if any changes.
Cindy
<You’re welcome Cindy, do please keep us posted. Wil.>
Re: Tomini tang mouth injury
5/18/19
Happy Saturday WetWebMedia Crew,
<Happy Saturday Cindy>
Just thought I would update you, my Tomini with the injured mouth is unchanged.
I turned the lights down and fed Spectrum 1.0 and 0.5 pellets. The first day he
got 2 pellets but nothing since then.
Yesterday he didn't even try. He is just sort of swimming aimlessly around the
tank with his mouth open. I tried to get a good look but I can't see anything
wrong from outside the tank. Fortunately the other fish
are leaving him alone. He isn't emaciated yet but surely will be soon.
<Fish can go for days and even weeks without food, so I wouldn't worry about the
feedings...for now>
Do you have any other thoughts?
<Yes, do you have a quarantine tank or another stable, cycled tank where you can
move the tang? maybe a friend's or your LFS;...sometimes fish improve just by
moving them to another tank.>
Thank you, Cindy
<You're most welcome. Wil.>
Re: Tomini tang mouth injury
6/3/19
Happy Holiday!
<Same to you Cindy!.. sorry for the delay.>
The Tomini tang I wrote about last week has not improved and is doing worse.
Although he seems able to move his mouth he hasn’t really been eating. He can’t
keep himself upright in the water – for a few days he was “head down” but now
keeps log rolling or just going belly up. I hate to see his struggles. His
abdomen is visibly bloated.
<Bloated is usually caused by something ingested or gas accumulation..>
I tried feeding food soaked with commercially available
Metronidazole/Praziquantel combo in case the problem is intestinal parasites or
worms, but he doesn’t seem to be able to get the food. Per your suggestion I
moved him to a hospital tank. When that didn’t work I added Praziquantel to the
water.
If you have any suggestions I would be very grateful.
<If you don’t see any improvement in the next few days, administer Epsom Salt;
as a laxative; at 1 teaspoon per five gallons of system water.>
Thank you,
Cindy
<I hope this helps, Cindy. Wil.>
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Re: Tomini tang mouth injury
6/3/19
Thank you for the reply!
I did try the Epsom salt, but he died the next day ?
<Ohh...sorry to hear that. >
Thank you so much for your assistance and knowledge!
Cindy
<Will be here to help anytime. Cheers. Wil.>
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Ctenochaetus disease 4/27/07 Hi,
<Diego> When I realized what you meant for "live in your
city" it was too late, I hope I didn't look too silly.
<Mmm, no> Thank you for the quick reply and the huge help.
Unfortunately the Tennent Tang died while I was doing a freshwater
dip to cure a great number of black spots that he had. I followed
the dipping procedure but I think that something went wrong with
the pH adjustment (I didn't wait enough time for the PH to
adjust and when I measured the pH after the dip it had dropped to
7.6-7.8). Bad way to learn it but it won't happen the next
time. After reading on your website I decided to try with a
Bristletooth tang, which seems more suitable for my tank (75
Gallons). <Yes> Strangely enough my LFS has scarcity of Kole
tangs and abundance of Tomini tangs. <Mmm, they likely don't
buy from dealers that carry much in the way of Hawaiian imports...
the "drop" this year is huge for Ctenochaetus
strigosus> This brings me to my current problem. I bought the
Tomini on Sunday and it is currently in the quarantine tank with a
6 line wrasse, today I noticed a big mark/bump on his side behind
the pectoral fin (see pic1). I think It could be some kind of skin
lesion due to him bumping into something in the tank, <Likely
so> especially since on the other side it has some scratches in
the same region (see pic 2). Could it be something else? Should I
treat it with something? <Possibly... Nitrofurazone... see WWM
re dosage, SOP> The water in the quarantine tank comes from the
main system and currently is: Salinity 1023 temp 78-78.6 F pH=8.2
alkalinity=7.5-8dKH (slowly rising in the main system due to the
use of Kalkwasser) Nitrites 0 Nitrates 5-10 ppm (<5 in the main
system). The fish is still shy and scared but eats the enriched
(Selcon) Mysis shrimp and the only odd behavior is some fast jerks
to the side (this could make him bump into objects) while swimming
and sometimes when he is standing still in one place. Thank you
very much,
Diego
<Welcome. BobF> |
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Sick Kole Tang? I picked up a Kole tang
about a week ago from my LFS. I observed it for quite awhile before
purchasing it and it looked (and acted) normal. About 4-5 days ago,
I began noticing what appeared like "bruises" on both
sides of its body and tail fin. <Yes, well shown in your
photograph> These dark spots are very noticeable and I have
included a picture. It is eating normal but is exhibiting what a
would describe as a slight "twitch" as it swims. It is
not what I thought was "flashing". It has been in a bare
bottom QT (alone) since I purchased it with PVC pipe and will
remain there for another five weeks (if it survives). If it is
sick, I would like to treat it as soon as possible. I checked the
FAQ's on this subject and found what I think is a very similar
circumstance, but the diagnosis was poor water quality which was
corrected by a water change. I do not think that is my problem (I
checked all parameters) but did a water change just in case. Any
suggestions would be greatly appreciated. <This specimen may
simply be "too stressed" by circumstances in its recent
past, your handling... I would seriously consider "just"
dipping and moving this specimen. Low risk of disease transmission,
high risk of death otherwise. Bob Fenner> |
Re: Sick Kole Tang? Bob, sorry for the follow-up but I want
to make sure I understand your suggestion. I definitely think the fish
is stressed because it is quite pale in my estimation. I try not to
disturb it too much. I am assuming that you mean doing a fresh water
dip but when you say "dipping and moving" I am confused. Move
where? The display tank? <Yes> I would hate to take that chance
since I have only had the fish for ten days. Thanks again for your
valuable time. I really want to try and save this beautiful fish.
<Worth the risk (as stated) IMO/E. Bob Fenner>
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Ulceration on Tang Hello, <Hi Jim, MacL here tonight
with you> I've got a Kole Tang that has gotten very pale and
has a Brown Spot on his head and near one of it's gills.
Initially, I thought it was just stressed, but after 2 weeks of
observation, I've noticed the spot getting larger, and
beginning to turn red from it scraping on the rocks. <Its hard
to tell from the picture but it looks like its either bumped it and
created an ulcer or it has some type of parasite that is trying to
come through.> Tests show that my water has a PH of 8.0, 0
Ammonia and Nitrites, and 5 ppm on Nitrates, and I keep the
temperature at about 82 degrees. <I'd really like to see you
get the nitrates to zero.> It is eating well, but I would like
to quarantine and medicate to address the problem, only I have no
idea what it could be. <If you can find some medicated food that
might be your best option since we know it is
eating. Thinking that it might be a parasite your best
bet for the hospital tank might be to use copper, as much as I hate
using it. You'll also need to use an antibiotic either in the
meds as previously discussed or in the water. I know
some people who have been very successful using MelaFix although I
cannot say that I have personally used it.> I've attached a
photo to show you. Please help if you
can. Thanks. <Jim, your fish is really way to light
so obviously way stressed out. I think you need to do something
pretty fast on this. Please let me know which way you decide to go.
MacL> Jim |
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Tang unable to maintain balance Bob, I recently bought two
Tangs (Naso, and a yellow eye Kole) to add to my 200g aquarium. Before
putting them in the big tank I decided to put them in a hospital tank
to give them some time to adjust to the new water without being hassled
by the other fish. <Good idea> Tonight I found the yellow eye
Kole laying on his side at the bottom of the hospital tank. Upon
further inspection the fish is still breathing. Fearing that the
problem was water quality I carefully moved the Kole tang into the sump
of the big tank where he would still be physically isolated from the
other fish but in a fully cycled tank. I also moved the Naso into the
main tank as a precaution (he looks healthy although a bit shy). I have
been keeping an eye on the Nitrates and ammonia and changing water in
the tank to keep them as low as I can while the tank adjusts to the
additional bio load. What is the probable cause for the tang to become
sick? Is possible to save him? Thanks, Rodney Korn <<In such a
large system, I discount the sudden loss of water quality as a probable
(first, primary) cause... How "recent" is recent? This is
little doubt an animal collected in Hawai'i (most Ctenochaetus
strigosus, Koles, Yellow-Eye Tangs hail from there to the U.S.)...
but I would conjecture that this animal has/had some sort of congenital
defect, or suffered some unseeable trauma through the
collection/shipping procedure from the wild... Not likely an infectious
or parasitic situation but "something" genetic, or
developmental...Bob Fenner>>
Re: Tang unable maintain balance Thanks for the quick reply.
The fish in question did not make it through the night. <Ah
yes, I intimated as much> He was purchased from FFExpress about two
weeks ago. I guess I am just glad the Naso Tang is still doing well
(still very shy and gets chased by a blue damsel once in a while). I
figure that as the Naso grows the Blue will learn humility (the Naso is
a Juv, just a little bigger than the blue). <Yes, the health of this
animal is not linked to the deceased Kole> On a second, less
important question, do you know of any way to catch a fish in a BIG
aquarium with minimum stress to the other animals? I was thinking about
moving the blue into the hospital while the other fish get acquainted.
He is fast and there is lots of room for him to run to...Thank, Rodney
<<About the best technique is to condition the animal not to
respond (shades of B.F. Skinner, no relation). Place a net (I like the
large plastic coated handle green ones) in the tank in a corner, at
about a thirty degree angle (lip under water)... and casually feed the
fishes over and in this site for a few to several days... leaving the
net in the tank... soon, Mr. Fast Damsel will be lifted out. Bob
Fenner>>
Worried (about Kole Tang appearance) Mr. F. Had a small melt
down here on Saturday, the temperature in my garage where my hospital
and isolation tanks (both tall 20's) are located went to 90+
degrees, the tanks themselves went to 84+ (the upper limit of the
particular Hagen "on the glass" thermometer used). In the
isolation tank at the was my new Coral Beauty and Cole Tang. Due to my
anxiety and the necessity to play host I was not able to baby sit these
new fish so I threw the dice and introduced them into my 55 gal. show
tank after only a day of quarantine. <Hmm, likely what I would have
done, had I had such presence of mind> The show tank: 55 gal. AGA
(not reef ready) with 45 lb. of new Walt smith Fiji live rock, 40 lb.
of crushed coral substrate. Fluval 304, CPR Backpack IIR (just replaced
AMiracle quad mini, as good as a sea clone) <You're making my
day>, 2 Rio powerheads for circulation (on the 40 watt light
circuit), <Now, definitely> one 40 watt actinic, two 55
watt PowerCompact, two False Percula Clowns and two Blue Devil Damsels
two Hermits, five Turbo. Snails. I use the Aquarium Pharm. tap water
filter for make up water and mix-up water (aged one week) for weekly
four gal. changes. The coral Beauty looks great, if I could have only
one fish this is the one. I am worried about the tang. He/She now looks
mottled or scratched, I think it has scraped itself hiding behind the
rocks. Tang has a good appetite, I have seen it eat. Just looks like it
danced with a bus. No "other" sign of disease, no torn fins,
no itch or mucus, Bright alert eyes, the only other thing is it's
almost always hiding, dashes away when it sees me (I'm not taking
the hiding personally, I'm not the best looking fellow but I
don't think I've been scaring away my fish). Any procedure or
additive to help the Kole? <This fish, Ctenochaetus strigosus, is a
real tough survivor type... and I have seen some very "rough"
ones in captivity and the wild... And had many "bad
shipments" totally rally in a few weeks time. If it's still
eating fine, do possibly add some vitamin and iodine solution to its
foods, otherwise just try to be patient... You will likely experience a
similar "rebirth" of this ugly duckling tang. Bob
Fenner>
Chevron pop-eye Hello again Mr. Fenner, Sunday I added a
2" Chevron tang to my main tank. The first couple of days were
almost constant jousting w/the 2.5" flame angel. The RedSea
Sailfin has pretty much left the tang alone. The tang had pop-eye that
seemed to have partially peeled off (like sunburn peeling) late
yesterday afternoon. I was thrilled that he was healing so rapidly.
<This is a great aquarium species... the peeling was likely
originally due to a scrape with a net.> I've been soaking food
in Zoa« & Zoecon. Well, this morning the clear part of
his eye has turned to a grayish black glob & I'm wondering if
he may have bumped it in the night or is this the final
"shedding" of the bad eye. <Could be either...> Also,
his fins have become shredded from the jousting, but seem to heal
overnight. I purchased some Melafix but have not added it to the tank
because the tang looked so good last night. I just noticed that the
flame now has a slight cloud on his left eye. What do you suggest?
<Patience, the continuing use of the vitamins> Remove one of the
fish, treat w/the Melafix or let nature take its course? I do have 2
cleaner shrimp in the tank. Will they help w/the pop-eye? <Yes,
indirectly> On another front, SUSHI, my brother got word from his
tank builder that his new 180g may not be ready until the 7th of Nov,
instead of the 2nd. We will know Friday if the tank will be ready on
the 2nd. I plan on coming down from Las Vegas when the tank is ready.
If you can't make sushi on the 2nd, possibly the following weekend.
I will let you know when I know if you are still interested in spicy
scallop hand rolls. As before, you are still welcome to stay @ my
brothers place in Newport. <Thank you. Please keep us informed. Am
still hoping to be out of here, in Taveuni/FJ then... Bob
Fenner>
Re: Chevron pop-eye Mr. Fenner, You are quick! Yes the
Chevron is a beautiful species & seems to be holding his own in the
tank. He was a birthday gift from my brother & I hate to see him in
such shape. I noticed in a few q&a's that you mentioned that
you added Zoa« or Zoecon or Selcon directly to your system
weekly. How much would you recommend for a 50g tank. <About a
teaspoon> I'll keep you informed about next weekend. Thanx
again. Craig Citro P.S. Where in the world is Taveuni??? <Ah, the
Garden Isle of Fiji, in the South Pacific... to the east of Fiji's
principal northern island. Bob Fenner>
Eye Abrasion Mr. Fenner You sir have a astounding web site.
<Getting better all the time> I came across it about three months
ago and it has given me a far better look at the balance required for a
working marine aquarium. I don't think my tank (90gallon FOWLR/soft
& hard coral but no so reef) has ever, in it's two years,
looked this beautiful. Thank you! <A pleasure my friend> I hope
you will lend me some advice about a problem I am having with my
Chevron Tang. About three weeks ago I noticed a small scratch above her
left eye. Not large at all. I kept up on my water quality and since she
was eating and behaving well I just let her be. By the next week the
abrasion grew in area. It became streaked red, extending around her eye
and down towards her month. I lowered the SG slowly and started adding
vitamins to her food (Nori, grape & red fern Caulerpa). Today her
eye just looks hideous. I am cretin it has become very infected. The
whole eye has become encrusted and almost looks like a boil has formed.
I live on the outskirts of Anchorage Alaska, and getting to a LFS is a
possibility but their knowledge of what to do is limited (I have called
seeking advice). My gut feeling tells me that it needs to be lanced and
drained (oh, will move her to QT tomorrow). She is eating well and by
all means she does act normal. I feel that her fate is not good if
something is not done. Can you suggests a course of action?
<Yes... a practical and likely fruitful course of action I would
take is to carefully (two nets, maybe a friend with one to help) net
this specimen, hold it gingerly and daub the infected area with a
mercuric disinfectant (mercurochrome, Merthiolate, Merbromin) as for a
cut for humans and a cotton swab... This may have to be done every
other day twice or three times... Otherwise to continue as you have
with the foods, vitamin solution. Don't lance the growth above the
eye for now.> I will be able to order 48hr delivery from any
e-tailor any supplies that might be needed. Your help would be very
welcome!! Any other information can be sent right away. I will give the
specifics of the tank below. Thank you for the chance to save my
friend. She has been with my for two years and has quite a personality.
:) Carl D. Tank: 90 gallon, glass w/ 30 gallon sump w/ refugium 380
watt PC lighting AquaC Skimmer 100lbs Live Rock & 3" DSB
Ammonia 0, Nitrite 0, Nitrate trace, Alk 3.4, Ca 425, 78*, SG 1.024
Chevron tang, Yellow tang, 5 blue-green Chromis, spotted Hawkfish,
lawnmower blenny, Soft and Hard corals (need a list?) :) <No. Good
luck my friend. Kia orana. Bob Fenner>
Re: Eye Abrasion Mr. Fenner, It is so kind of you to write
back so soon. It puts my worried mind at ease. :) <Ah, am glad for
this> I will do as you suggested concerning my injured Chevy. Tang.
I have readied my QT, and my good friend is coming over tomorrow to
help me move him from my main system and give her first treatment (I
hope my LFS has the disinfectant). <Or any good sized regular
market... The suggested disinfectants are very commonly available for
children's scrapes and cuts... Non prescription, but a
pharmacist's is sure to carry these> I will write again soon and
update you if you don't mind. Probably ask for some more advice
too. :) Mahalo nui hoaloha! Carl <You're welcome my friend.
Aloha, Bob Fenner>
Yellow eyed tang I have a yellow eye tang been in the tank
for a few months. recently it has gotten to look like it can't shut
its mouth. <A very bad sign, development... Often, a
"bump" or rubbing on a bag in transit will result in
microbial infection, loss of feeding, vigor... death. Best to react
ASAP> It looks like his mouth is peeling, any ideas? It may also
help to know that it wasn't until recently that I found out you are
supposed to feed them seaweed. Could these two things be linked?
<Yes, likely> In the tank are 5 damsels a wassy or rassy however
you want to pronounce it, a clown (orange and white) 6 black and white
fish. My wife picked up 3 hermit crabs 3 anemone 4 Featherdusters
about 20 lbs of rock and a walking pin cushion. Okay laugh I don't
know the names of all these fish. Its a 30 gal tank with proper
filtration unit (recommended by the fish shop) and a 50/50 bulb. please
help. Mike <Yikes... this is a lot of fish in such a small tank...
the Damsels in particular are often quite territorial (depending to a
large degree on species). Please use the Google search tool at the
bottom of our homepage: http://www.wetwebmedia.com/ with the names of
your fishes, "tang health"... to learn what you should know
as a keeper of this life. Bob Fenner>
Surgeonfishes: Tangs for Marine Aquariums
Diversity, Selection & Care
New eBook on Amazon: Available
here
New Print Book on Create Space: Available
here
by Robert (Bob) Fenner |
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