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FAQs about the Regal Angel Compatibility

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Angelfishes for  Marine Aquariums
Diversity, Selection & Care

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by Robert (Bob) Fenner

Zoas and regal angel dislodging but not eating them      12/24/19
Hi, i have an adult regal angel and recently tried a few different colored Zoas in my tank with him. He leaves all my LPS alone. He does rip the superglued Zoas from their frag plugs but does not eat them.
<Does happen...>
When they are sat on the sand he largely ignores them only occasionally showing interest. He is well fed, and i can see this may not work. I was encouraged as he ignores similar sized Palythoa.
<Interesting... What genus of Zoanthids are you referring to as "Zoas"? Palythoa are Zoanthids>
I can see he will be a pain with Zoas but the fun (?) for him seems to be ripping them from the frag plug. My question is, is there a more secure way to bond a Zoa frag to a plug, or do Zoas hold better onto rocks with their more contoured surface?
<I suspect that this Angel will continue pull at, otherwise destroy these "Zoas" no matter how they are attached>
If he could not dislodge them it might be a start and i cannot return these to my LFS, thanks for any advice, Toby.
<I myself would try other groups of Cnidarians. Bob Fenner>
Re: Zoas and regal angel dislodging but not eating them      12/25/19

Thanks for your reply Bob. Over here in the UK Palythoa, Palys are sold under that name with variety next ,e.g. Paly purple death. 'Non Palythoa' tend to be sold as 'Zoa space monster' for example.
<Ahh, so... "Zoa" refers to just members of the genus Zoanthus? Perhaps other genera>
The regal angel seems to know the difference somehow! I will try gluing the Zoas i have left into crevices but like yourself, I'm not hopeful of success. Thank you and the crew for your invaluable help to fellow hobbyists including myself. Merry Christmas and have a happy new year, Toby.
<And to/for you and yours Toby. BobF>

Pygoplites Diacanthus/Genicanthus Bellus Compatibility in large system    4/13/17
<Hi Jen>
I appreciate your site and all you do for us and the creatures of the sea!
I'm a prior reefer who had to put it on hold due to a major career change and after 5 years am finally ready to resume the obsession.
<Ah; welcome back to the fold>
I'm planning a 748 gallon reef(120" x 48" x 30") with lots of live rock and mixed corals.
Would one Regal Angel (Pygoplites Diacanthus) and a pair(male and female) of Genicanthus Bellus tend to have enough space to avoid animosity in this setup?
<Oh yes>
I'll have a 100 gallon quarantine tank with established live rock and plan to quarantine each specimen alone and slowly in order of shyness prior to adding to the tank. My entire livestock list will be added this way. These will be the only Angels in the system and be fed several times per day.
I have a 200 gallon refugium/sump on an opposite lighting schedule. I want to grow Chaetomorpha mainly for filtering and secondarily for food but also would like to grow Red Gracilaria for the excellent nutrition(for the
Regal). I know you're not supposed to mix Algae, but I've heard of people having a veritable Macro algae garden of mixed types in large Refugiums.
Would I be able to do just these two in this system if I keep them on opposite ends of the refugium, lower lighting on the Red Macro and trimmed up?
<Yes to growing multiple types/species here. Really is more a matter of culture space>
Or any tips? I'll have a skimmer rated for a heavy bio load at 1,000 gallons. I haven't decided which brand yet. Thank you,
<Exciting! Please do periodically update us with your ideas, progress. Bob Fenner>
Re: Pygoplites Diacanthus/Genicanthus Bellus Compatibility in large system; Now Ozone     4/13/17

Hi Bob,
Big fan of yours for many years. Every time I veer from your advice I wish I would've followed it. On this subject, I was pretty sure of the answer, but it's always nice to get a professional affirmation. I will keep you
updated. Thanks!
<Glad to share w/ you Jenny. BobF>
Re: Pygoplites Diacanthus/Genicanthus Bellus Compatibility in large system    4/13/17

What size ozone generator would you recommend for this system? I want to try to get to 400, but they say to undersize a little. You think a 360 would do it?
<400 mg/h is about right. See my writings on sizing such ( 0.3 to 0.5 mg/hour per gallon of aquarium water)... I'd get/use, run full output at this size, no worries. Bob Fenner>
Re: Pygoplites Diacanthus/Genicanthus Bellus Compatibility in large system    4/13/17

Great thank you!!

regal angel, comp.     7/27/12
Hi there, Jim here again. I got a Indian ocean Regal Angel. I had him for about two weeks in my quarantine tank, and he is about 5". He been living on clams and marine algae. Yesterday he started to eating spectrum pellets.
In a few more weeks I am going to move him to my main tank. My concern is I have a Blueface Angel, He is about 6". I have had good luck in the past mixing large angels, but I am really worried about my new prized fish getting a beat down by the blueface.
<Then don't mix them>
The regal has no aggression so far that I can see. My plan is to pull the blueface out and put him into quarantine for a few weeks when I move the Regal in to my main tank. I am hoping the Regal has a some large angel attitude so he hold his own. Do you think will work?
<Too likely to be trouble in this size, shape system. BobF>
 The tank is a 180. I am buying a 300 next spring. I hope you all are well,
<Thank you; I'd wait>

Re: compatibility (RMF, second opinion on Zebrasoma xanthurum/Pygoplites diacanthus compat.)  7/6/09
Thank you for your quick response!!
<Happy to help.>
Instead of the trigger do you think that I could add a Regal Angelfish from the Red Sea?
<Assuming you can get a Red Sea specimen -- a major challenge in itself -- then this would be quite a good choice, though your tank is, in my opinion, at the low end of what's viable for non-dwarf Angels.
I do wonder if Zebrasoma xanthurum might be just similar enough in colouration the two species might not get along? It's the blue body and yellow tail that worries me. Introduce the Tang first, and then the Angel, and keep an eye on them.
Cheers, Neale.>
<<S/b okay if there is sufficient psychological space/room. RMF>>
Re: compatibility (RMF, second opinion on Zebrasoma xanthurum/Pygoplites diacanthus compat.)

Hi Bob,
Thanks for your comment on the query; in this case, the tank was 90 gallons I think, which to me (as a very limited marine aquarist!) seems at the low end of what a non-dwarf Pomacanthid is likely to "share nicely" with something else. Am I being overly cautious here?
Cheers, Neale
<This is way too small for just a Pygoplites itself... Even though specimens from the Red Sea are exemplary (relative to the species elsewhere), this would be too limiting a world. Cheers, BobF>
Re: compatibility (RMF, second opinion on Zebrasoma xanthurum/Pygoplites diacanthus compat.) 7/7/09

Looks like I will wait a while and save for an upgrade. What would be the recommended aquarium size for a Regal Angel from the Red Sea? I read over the FAQ's on the Regal Angel and it said was a minimum 4 feet when young.
Since I am going to save for the upgrade
<And at least six foot long as an adult... eight plus is better... A few hundred gallons>

What size would you suggest for an Emperor with a Regal? Or am I just getting greedy here?
<See WWM re the Pomacanthus>
Thanks for your patience with all my questions!
<And you for your interest, reading. BobF>

Re: Compatibility between the Rock Beauty and a Regal   4/24/08 Good morning Mr. Fenner, Thanks for answering my questions; one more, if you have a moment (though I suspect I know what the answer will be): what do you think of compatibility between the Rock Beauty and a Regal? <Mmm, "not very"... unless the system is very large... hundreds of gallons, I'd pass> Neither fish are in the system yet; the RB is ~3? and the Regal is on the order of 4?. Fish currently in the system are Acanthurids, a single Sixline Wrasse, and a small school of Lyretail Anthias and Yellow Coris. Rockwork is quite loose with numerous caves. Kindest regards, Chris Brightwell <For the 220 mentioned earlier? This might well work. BobF>

Regal Angel, Reef Safe? 8/7/05 In your opinion, is the Regal Angel a reef safe fish ??? I have 2 different opinions. one says it is reef safe provided that it is well fed and the other is that it is not safe in a reef setting. I have 150 gal, SPS tank with a few clams. Thank you, Ramy Banoub. <Hi Ramy - Ali here. As with any angel, the chance of finding a totally "reef safe" specimen is always hit and miss. It is impossible to say for sure whether your angel will go around systematically picking at your treasured "reef" animals or if he will act as a perfect 'angel'. From personal experience, I have had two Red Sea specimens: one which never looked twice at a coral and another which continuously picked at fleshy LPS corals and decimated the snail population. It is also not uncommon for them to suddenly change their behavior and acquire a taste for corals seemingly out of the blue. Additionally, this is also NOT an easy fish to keep. During the past year, from what I have seen at the wholesalers and retailers alike here in Southern California, is that not only is this fish is arriving with more frequency, but fortunately they appear to be more vibrant, alert and with full bellies. Perhaps better collection and shipping methods. Even with this said, I would only recommend this fish if you are an experienced reef/fishkeeper with a large aquarium with plenty of established live rock, who is able to locate a Red Sea/Indian Ocean specimen, under 3" that is eating prepared foods in advance. - Ali>

Mixing 2 juvenile regal angelfish Dear Mr. Bob Fenner Hi my name is Ignatio from Indonesia. I have 2 juvenile (2.5 inches each) regal angelfish in separate tank (@ 100 gallon) and would like to mix it in 1 tank and I have done it with no success. The bigger one is always chasing the other one. <Yes... very common> So I still want to try it and need your suggestion if it is possible because I often saw in many LFS in here can mix it into one tank. <Can sometimes be done... larger tanks are better... by either adding both simultaneously... or adding a larger one later... or sometimes by using a separator for a week or so...> Should I take out these 2 fish for the temporary moment and after several while put it again together in one tank?? <Yes, one approach> Note: all my regal has been living in my tank for over 2 months now and accept the food already. Again, I have also a Sea Lilies (the green one) and has been living in my tank also for 3 weeks. I heard this species is difficult to maintain so what do you suggest for this one (the food, how many times for feeding it etc) <This is posted here: http://www.wetwebmedia.com/crinoids.htm and the Related FAQs, linked above> Note: Recently I cultured the phytoplankton (Iso) by myself and feed it with this plus the Liquifry Marine from Interpet. Is this enough? <Might be... along with live rock, sand use. Bob Fenner> Best regards Ignatio

Reef safe angel Hi Crew, <Hi Greg, MacL here with you today.> Hopefully you can clear-up an angel fish question for me?  I have always read that angel fish (except for some Centropyge) are notorious coral nippers but I have recently noticed what appears to be a Regal Angel (Pygoplites diacanthus) in reef aquariums in Eric Borneman's book on aquarium corals. <Nice fish aren't they? BUT sadly I wouldn't call a regal reef safe, the reality is that angel fish are all over the reef because that is where they feed.> Is Pygoplites diacanthus generally considered reef-safe? <Nope.> Do you have an recommendations for attractive reef-safe angels, not of the Centropyge genus?  I had to remove my Centropyge argi due to it nipping my Lobophyllia. <I have heard that swallowtails are relatively reef safe, please note the word relatively. I currently have a Maculosus angel in my reef but let me stress this, as he has aged he has become less and less reef safe. It truly depends on what you keep in your reef and your individual fish. As a general rule the Genicanthus Angelfishes as a whole are considered fairly reef safe but they are also considered fairly delicate.> I would also like to keep a copper banded butterfly in my reef tank but, from reading the many postings on WetWebMedia, I still cannot draw a conclusion regarding whether or not these are reef-safe.  The answer always seems to be ?That depends upon your definition of reef-safe?.  <That is because some fish work just great and others are just terrors in the tank.>By  ?reef-safe?. I mean is a copper banded butterfly likely to cause stress or shorten the life of soft, SPS or LPS corals or of a bubble tip anemone (and possibly snails and cleaner shrimp). <They might very well eat the anemone. Its been known to happen.> What is you opinion or experience? One other problem could be the several tangs and the maroon clown pair in my tank.  Is a copper band butterfly likely to co-exist well with such fish in a 180g aquarium? <Usually that isn't a problem.> Lastly, I would like to add a few Heniochus if I could just locate any that are reef-safe <I loved my Heniochus.>(if I cannot add a copper band B/F). I can only locate Heniochus acuminatus but I have read that only Heniochus diphreutes is reef-safe.  Could you suggest where I might find Heniochus diphreutes (unless you disagree that H. acuminatus is not reef-safe)? <You can try www.themarinecenter.com, but I have never had any problems with any Heniochus. Once again though, its really individual fish.> Thank you, in advance, for the ?butterfly brush-up?!  <You might take a look at Scott Michaels latest book on angel fish for more detail and please let me know what you decide. I could talk angel fish for days and days, they are truly amazing and gorgeous, glorious fish. Good luck Greg, MacL> --Greg

Re: Regal tank Thanks You Rock!  Thank you for all of your answers! << We provide very few answers, and very many guesses.  I hope we helped. >> Aloha from Hawaii, Dawn << Blundell, jealous wishing he was in Hawaii >>

Regal Angel Enquiry Hi Wet Webbers... <Hi Brett, MacL here with you today.> Just a simple enquiry.  Are Pygoplites (Regal) angels reef safe? <NO they aren't, no way no how>  Can I trust one in my soft coral/coralline algae tank? <NOPE> I understand their natural diet is supposed to be tunicates and sponges.  Sadly, here in Thailand fish sellers (I use this term as most know little or nothing about the creatures they sell and are just out for a quick turn over of stock with little care for the animals in the time they are in the shop/market) feed their reef fish brine shrimp and nothing else.  I am not sure if this is due to the belief they are nutritious or just that fish seem to relish them.  As long as it is eating, will a regal eat other more beneficial foods with ease when I get it home or is it likely to be a struggle to get one onto them after prolonged feeding with brine shrimp. <Regals are very difficult to get to eat so if you have found one eating that's a good thing. It needs more nutritious foods and it does need the tunicates and sponges in order to stay healthy and live a long and fulfilled life without dietary deficiencies.  You can however get these in some types of angel formula foods.  Regals are one of the toughest of the large angels Brett but very pretty fish for sure.> Brett Moloney Bangkok

Regal Angel  Hi, love the sight!<Thank you, so do I!>  I have a 5in Moorish idol that I had for over 1 1/2 yrs. I want to get a juv. regal angel . It has been at the LFS for 7 weeks and is eating well so (I don't see that to often) I want him! tank is 135 gal. my question is : will regal pick on idols filament? have a cleaner that picks all the time with no affects! have another question
<He shouldn't pick on the idol's filament but you sill need a larger tank in the future.>  How can you tell if a juv. Emp angel is from the red sea?<I couldn't tell ya but I bet you could find something on our website or try a doing a search. Cody>  thanks, Bart

Regal Angelfish Anthony, <cheers> My other half is nuts about the new tank, thanks for your input to make it possible. Now the dilemma, we have a hand fed Imperator that ready to change but since he love to eat corals ($$$$$) we are forced to find something to replace him with.  <unfortunate... a beauty> I have been reading up on Regals and it seems that of all the large angles they are least likely to eat all the replacement corals <I strongly disagree... even with Maldives orange throats or Red Sea races> ($$$$ this get expensive). I know that Red Sea specimens are the best but any new and improved foods or care recommendation. I've read Bobs take on them in CMA, please give me any updated information on these guys. <I seriously doubt that you will be happy with this fish... they are categorically quirky and challenging... with little guarantee of being reef safe. A beautiful fish... but not reef safe. Is your goal here to have a big angel or just a well behaved angel? Most of the Pomacanthids are a clear risk once any of them gets over 4-6". If your tank is at least 100gallons and/or 6' long, do consider Genicanthus species of Angels. Best of all worlds: med/lg, beautiful, peaceful, reef safe Planktivores. Two disadvantages are shyness/ sensitivity (although no worse than the Regal) and need for large aquariums> Thanks Mark Johnson <best regards, Anthony>

Re: Regal Angelfish (marine stocking) Anthony (Mr. Speedy), <Have you been talking to Kara? I could not resist making a crack. Steven with the follow up.> Thanks for the input. Next question, Purple tang and Chevron in a 180? <It can be done. Add them both at the same time. QT as always.> Thanks, Mark <You are welcome. -Steven Pro>

Regals Hi! Bob, As I go about planning for my tank I have some more questions for you. But first I hope none of your immediate family or friends were hurt yesterday. I believe most of us are still in shock and don't know what to make of all this yet. <I am still... very perturbed... "if a clod be washed from "your country here" shore, it is the less, if a "person" is murdered thus, their death diminishes me for I am part of all humanity. Therefore send not to know for who the bell tolls, it tolls for thee". With apologies to John Donne's memory and misappropriation> On to the fish question. I have been reading some good things about regal angels from the red sea. Can you keep a regal with a majestic in a 240, what about a regal, majestic and a Blueface in a 240 gal?. <Better just two of these in such a size, type system. Can be done> Other fish with them would be a Copperband, a Betta, a pair of clowns, a snowflake moray and maybe a tusker. Let me know what you think. <A beautiful collection> This tank is going to be connected to a 1000 gal tank that will have an emperor, Mac and Annularis in it. I am also planning on putting between 7-10 tangs in it. One of them will be a Sohal. I already have him and he is 8". Will he kill the other tangs or in a tank that size the rest of the fish should be safe?  <In such a size system, I give you good odds of mixing> The tank is 15 feet long and four feet wide. I am going to try and set both the tanks up as reef tanks. I know the angels will eat some of the corals but that is o.k. I would like to keep them in as natural an environment as I can. <I understand, and agree> Once again I appreciate all your help. <Thank you my friend. Bob Fenner>

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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