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trexcody

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Aloha Fellow Aquarists,

My name is Cody Chapin and I am currently working on a thesis project to describe the status of Potter's angelfish in the marine aquarium industry. I am trying my best to put together the "big picture". I have been interviewing and working with wholesalers, retailers, and aquarium collectors on the Big Island of Hawaii and also on the island of Oahu. I am also in need of the hobbyist perspective and that is something I hope you all can help me out with. The following questions will give you an idea of the type of information I am looking for:

Husbandry Preferences:
Do these species fare better in reef aquaria vs. fish-only tanks? Do they nip at corals and if so which do they prefer? Does coral nipping vary according to the individual? Are there any particular fishes that Potter's should not be housed with? Do you have any general husbandry recommendations for this fish? What is the smallest tank size you would recommend?

Mortality & Longevity:
Is this fish considered more difficult to keep in aquaria than most other reef species? Are there any parameters or conditions (perhaps certain aspects of water quality) that this species is particularly sensitive to? Is there a high mortality rate for this fish when compared to other angelfishes or reef fishes? If well-established, how long can these fish last in aquaria?

Diet:
What foods do Potter's most seem to prefer? Pellets, flakes, gels, live, or frozen? Due to possible specialized nutritional needs, is it critical that certain "more specialized" foods (i.e. sponges) be offered to this species; and, if so, what are those foods? Is it difficult to get this species to eat following capture or out of retail? Are there any particular "first foods" that work for newly-acquired specimens?

Disease:
Are these species susceptible to any particular types of disease in aquaria? (I have heard that gill worms have been known to occur.)

Reproduction:
Have any aquarists out there attempted to pair or even spawn this species in captivity and, if so, were they successful?

Other:
Do hobbyists prefer certain color patters, perhaps more rare patterns (like an all-blue individual, for instance). Will they pay more for these variations?

So now you get the idea. I would appreciate your time and help with this project... I am working on a much bigger project to help fortify the aquarium industry here in the Hawaiian Islands and any information that you provide will help to move that project forward as well. I will keep everyone posted. The more replies that I get (even to verify earlier replies), the more that your input will be fortified in my study!

Mahalo a Nui Loa!!!! (Thank you very much!) I wish you all happy reef-keeping! :D
 

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Len

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Wow. Lots of questions, but here goes: :P

They fare equally well in reef and fish-only. Some specimens will nip soft or stony corals while others are well behaved. Yes, it varies with the individual. Potter's should not be kept with other Centropyges (for reasons stemming from territorial aggression) or obviously fish that can eat them. I would not keep them in tanks smaller then 30 gallons, but preferably 40+.

This is one of the harder Centropyges to husband in captivity. I'm not sure of what specific conditions this species prefers. It is simply not as hardy as other dwarf angels and often will refuse to feed in captivity. If it does feed, this species can live for 20+ years.

Regarding food items, it really varies on the individual specimen. Again, a lot of collected Potter's will not feed. I've had them eat mysis, brine, seafood blends, flake, and pellets .... it depends on the individual. You should have a variety of food types available when you buy a Potter's to improve the likelihood that your specimen will eat. Once it feeds on one food type, it can (and usually does) learn to feed on other types.

Potter's are not more susceptible to marine fish diseases then other Centropyges IME. Not surprisingly, Ich is the most prevalent disease that afflict them. Flukes can occur too, but I have not witnessed an elevated susceptibility to them in this species. As always, quarantine your fish before adding them to the display tank.

RCT has bred them in captivity, but I don't know any people who do it in their home aquariums. I have heard of pairs courting each other in home aquariums, but they did not yield viable fry.

I'm sure hobbyist would pay more for odd colored specimens like the photo you've attached. Rare morphs are usually sought after in our hobby.
 

trexcody

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Thank you Len and Matt for your timely replies! I hope to see more like them. Len, do you think that you can verify that 20+ year life span? Do you know of any specific cases? That would be extremely beneficial to this study.
 

Len

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Brandon, Alas, I can not confirm the life span. It's all anecdotal. I've kept Centropyges that have lived over a decade, and I know someone who's kept a C.loriculus for 15+, but I don't personally know of any one with a long lived Potter's.
 
A

Anonymous

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Hi!

I got my first Potters, actually first angelfish in 20 years, a month or two ago. It in a mixed 150 gallon reeftank (300 gallon system) and so far is doing great. It hasn't nipped at anything and has been eating mysids and Reef Nutrition arcti pods. Sorry I can't be more helpful!

Rich
 
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Anonymous

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Brandon, I don't see it mentioned anywhere but this species (as well as the entire family Pomacanthidae and the closely related Chaetodontidae) is rather intolerant of copper levels in the water. Copper is sometimes used to treat parasites like Cryptocaryon. Angels and butterflies don't handle it well at therapeutic levels.
 

trexcody

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I just wanted to say a big MAHALO to everybody who responded to my post. I promise that this information will get put to good use both in my thesis and in my aquarium industry-conservation work here in Hawaii. I may be getting in touch with some of you to follow up and get more details. Take care everybody and best of luck to you in reef keeping... I hope it is a hobby that inspires you and allows you to educate others about coral reefs and how important they are to our people and our planet.

With Aloha,
Brandon Cody Chapin
 
A

Anonymous

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Flukes can occur too, but I have not witnessed an elevated susceptibility to them in this species. As always, quarantine your fish before adding them to the display tank.

I've seen you mention flukes a few times Len, but these parasites have a rather convoluted life cycle, and thus are rare in captivity, and certainly cannot propagate themselves and infect other inhabitants.

I agree about the hardiness of the species, but I'd be willing to bet that as with other supposedly delicate species, this is due to it's intolerance of shipping and such.

Jim
 
A

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JimM":2k3peoo7 said:
Flukes can occur too, but I have not witnessed an elevated susceptibility to them in this species. As always, quarantine your fish before adding them to the display tank.

I've seen you mention flukes a few times Len, but these parasites have a rather convoluted life cycle, and thus are rare in captivity, and certainly cannot propagate themselves and infect other inhabitants.

I agree about the hardiness of the species, but I'd be willing to bet that as with other supposedly delicate species, this is due to it's intolerance of shipping and such.

Jim

So what where those clear flatworm like things that infested wild fish when I worked in wholesale? We'd freshwater dip and they'd turn whitish and drop off. Before using Dylox we had a real problem with a few select exporters. They definitly bred themselves into plague status in no time and went fish to fish with ease. Mainly angels at that. Vietnam, Sri Lanka and PI all sent me those nasties :(
 
A

Anonymous

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I'm not sure, I don't know enough about the order to say. Are all marine flatworms flukes? I do know however that unless you or Len have a very strange aquarium, with whelks, and some sheep or esturarian birds, you couldn't have been witnessing fluke reproduction.

The adults certainly can come in on wild fish, but that's where it ends.
 
A

Anonymous

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Yah these were definitly breeding in peoples systems. My old medication supplier had a few year run on Dylox it was so bad (running around the industry like a real plague)
 

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