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FAQs about Subgenus Euxiphipops Angelfish Behavior

Related Articles: EuxiphipopsMarine Angelfishes,

Related FAQs:  Euxiphipops Angels 1Euxiphipops Angels 2Euxiphipops Angel Identification, Euxiphipops Angel Compatibility, Euxiphipops Angel Selection, Euxiphipops Angel Systems, Euxiphipops Angel Feeding, Euxiphipops Angel Disease, Euxiphipops Angel Reproduction, Marine Angelfishes In General, Selection, Behavior, Compatibility, Health, Feeding, Disease

Angelfishes for  Marine Aquariums
Diversity, Selection & Care

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by Robert (Bob) Fenner

Changing Blueface Angelfish.    4/13/13
Hi Crew, I thought I would share these photos with your readers as I think many people like to see angels change colour.  My Blueface Angel (I was told from the Bali area) about 10cms long - the first picture taken on the 5th March 2013 and the second today 13th April 2013 In under six week I would say the Angel is now about 70% adult colours I was incorrect in my previous post as I thought I had the fish for longer but the date on my camera is more accurate. The tank is a FOWLR, natural seawater taken from the Andaman sea. I run a chiller set at 30C and a UV which turns over the tank about once every 15 min.s. I have not had any problems with disease, except this fish (only one in the tank) did have Lymphocystis which never goes away but has completely cleared of symptoms I think because of abrasions when purchased. I feed New Life Spectrum/Spectrumax 1mm sinking,
<I'd start using a larger grade>
Ocean Nutrition Formula Two pellets and Ocean Nutrition Spirulina flakes.
The fish is fed three to four times a day and all food is eaten within 30 seconds. Although local natural seafood is available I feel it is easy to pollute the tank with cockles etc and with these packaged foods 100% is ingested. All my fish colours (except Cubicus box) are great including my Yellow Belly Regal Tang which are notorious for losing their colour but mine after 9 months is as blue as when he came out of the sea. Regards, Adam.
<And our coverage, images can be found here:


Re: Changing Blueface Angelfish. – 04/14/13
Will the pictures go onto your site Bob?
<Already have... search and see. B>
Re: Changing Blueface Angelfish.    4/14/13

Hi Bob, I did search before my earlier email and I have tried again but still cannot find?
<Search should (does for me) come up w/ the common name or the subgenus Euxiphipops... and, and...
read all through here otherwise: http://www.wetwebmedia.com/FishInd3.htm>
 I thought this article would help with your readers expectations of colour change timing I appreciate the Euxiphipops change faster than the Pomacanthus. I want to try next with a Majestic but the Juveniles seems like gold dust. Even before in the UK they were extremely hard to get, I presume because of their relatively high cost and "look the same" factor as Koran etc. I should not really say this but I took the risk as a Juvenile coloured Blueface I thought I would get away with putting him/her in with an Adult Majestic, the Majestic was a little angry at first but after a couple of days no problems and even with the change to adult colours of the Blueface seems fine. I have seen photos online that these two can create a hybrid which I think is because of mass spawning of both species in a small area as I cannot see "a Blueface and a Majestic being a pair? Any ideas?
Regards, Adam.
<Have never encountered such a cross. B>
Re: Changing Blueface Angelfish. Note: to do in bold     4/14/13

Thanks Bob I found the article but the pictures are not loading in Internet Explorer or Firefox.
<Yikes... thank you for this. I took a look. Your pix had + signs in their namings... I'll have to go back, take out the plus signs and re-post. B>
add to Euxiphipops beh. f'       4/16/13

Thanks Bob the pictures are loading in both browsers now. Regards, Adam.
<Ah yes; after your notice, I fixed ayer... and tested. B>

Blueface Angel. beh.     6/3/13
My Blueface Angel changed in about two months from Juvenile to Adult colours but now seems in the last month to have slowed right down. He/she is about 90% Adult, will the fish complete change, is this normal for the last 10% to be very slow.
<Happens. B>

Navarchus losing color   10/3/11
Hey there folks - I have not been able to find a reference to this particular problem anywhere and was hoping you could help.
<Will try>
I have had a Navarchus angel for about 18 mo.s now in a 150 gal Fowlr. He acts and eats very well and has grown from about 3.5" to close to 5" in that time. However for at least the past year he has been steadily losing iridescent blue color in a particular pattern. It first disappeared on the margin of the tail fin, then began fading on the outline of the dark blue saddle just forward of the caudal peduncle. It is now completely gone from those two locations and is fading on the rearward margin of the dark blue area behind the head. In the other locations - the margins of the dorsal, anal, and pelvic fins, and the front of the head - it still seems normal. I have attached a pic for reference.
<See this>
He eats primarily NLS pellets - both Thera-A and color enhancing varieties, as well as various Ocean Nutrition flakes, some frozen, gels, and Nori.
Water salinity is on the low side at 1.021,
<Too low... a contributor here. Raise this to natural seawater strength>
nitrate is <1 ppm,
<How is this kept low? I.e., do you employ chemical filtrants?>
and temp is 79 F. Lighting is on the low side with only 36 watts of LED for about 8 hrs per day. There is some hair algae on the sides for browsing although he doesn't show any interest. Bioload is fairly low with only 3 other fish - a 6" melanurus wrasse, a 3.5" Lemonpeel angel, and a 2.5" flame angel. Yeah, I like angels and have found keeping multiples to be not very difficult if they are introduced gradually. The Navarchus is the undisputed alpha fish of the tank however and no one challenges him.
Other than the color problem all seems well. The fish is getting to the size where he is becoming "majestic" and he is beautiful regardless, but I would like to know the problem and reverse it if possible. Thanks for your help.
<Mmm, well, the foods you use are good, complete, but I'd mix in a vitamin/HUFA product as well... As to the real, likely root issue here, it's water quality... Are you aware of RedOx measure? Please search, read on WWM re... and we'll chat. Bob Fenner>

Re: Navarchus losing color -- 10/07/11
Thanks for your reply Bob.
<Welcome VD>
I am managing the tank more or less like a reef which is where most of my experience lies. There is about 120 lbs of good porous live rock in a very open structure, decent water circulation, and I wet skim with an old Top Fathom 200a. Perhaps a more modern skimmer design would be more effective, but I am reluctant to put money into this when the selection is fairly bewildering and seems faddish.
<Better for you, others to look into, investigate RedOx, perhaps acquire/use an ozonizer>
The bioload is relatively low. The water change rate is fairly low at about only 15 gal per month. The nitrate test kit could be inaccurate and I may take some water to a LFS for corroboration. Since your reply I am using multiple water changes to bring the salinity up to a target of 1.023, which doesn't seem that much different, but in this situation every possible contributor counts. I understand the concept but I've never employed a RedOx meter in the past - perhaps this is something I can have tested at a LFS
<Mmm, yes>
as well. Generally I've relied on keeping nitrates low and alkalinity reasonably high (my well water/make up water has naturally high calcium and an alkalinity of 300 ppm) to ensure decent overall water quality as other parameters seem to fall in line when this is done. Perhaps this is not enough in this case and I am just kidding myself here. I will test accordingly and step up water changes as a matter of principle.
I need to find a food with the vitamin/HUFA component as well. I feed Cyclop-eeze on occasion but the Navarchus doesn't eat much because the particles are so small.
<Look into New Life Spectrum pelleted food... completely nutritious and very palatable>
If I am successful in correcting whatever is causing this condition is it likely that the color will return?
<It indeed can>
Thanks again.
<Certainly welcome. BobF>

Pomacanthus (Euxiphipops) Xanthometopon beh.  8/25/06 Hi, < Howdy! > I've had my Blue-faced Angel for a little over a year. < Great fish! > When I got him, he was a changeling. Since then, he has changed into an adult but never completely finished the change . . . no blue spot on his rear fin and his face isn't quite  as mottled as other adults I've seen. He's been this way for about 4-5 months. In your opinion, will he complete the change or stay as is? < Undoubtedly, the angel will finish the change, but it takes time. A healthy specimen with appropriate food and water can live well over fifteen years! Yours is probably still a pimple-faced teenie bopper, waiting to reach maturity. > Thanks, < You are very welcome! RichardB >
Rich Aylward

Angelfishes 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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