Picking Your Clownfish

melypr1985

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Picking Your Clownfish

You wouldn’t believe how many times I have been brought a betta bowl and asked “How many Nemos can I put in this?” No kidding, once a week at least! Now, these people are usually steered toward the bettas with no trouble at all especially after I start on the list of equipment needed to house just one Nemo. Needless to say, most of us know that keeping a clownfish has much more to it, than just a bowl of water. This article isn’t about what it takes to keep a clownfish, but more about what to expect from your clowns when picking them out, pairing up, and beyond.

Photo by: melypr1985
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Let’s start at the beginning. Clownfish are what’s called Sequential Hermaphrodites which means that they are born without a sex (juveniles), change to males, then to females. They cannot change backwards, meaning if you have a female she can’t change to a male. This is very important when selecting the clownfish you want to keep. In most circumstances, it’s best to keep only a pair of clownfish in one tank. In the wild clownfish can live in a group based on hierarchy with a dominant female and male breeding pair and a group of juveniles. When/if the female dies, the dominant male becomes the female and the next in line changes to the male. In the home aquarium, it’s more difficult to achieve this since odds are you will purchase fish that aren’t juveniles anymore, but males and even a few males in transition to female. Space is also an issue with the “harem” tank. For you to be able to keep a group of clowns they must all be purchased as a group of juveniles and allowed to create their own hierarchy amongst themselves as they mature. In my opinion this means more than 5 clowns.

Photo by: Melev
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We will proceed on the assumption that you are a normal, everyday reefer that will purchase just two clownfish to keep as a pair. When you are out shopping at the stores or online you should be careful to note the size of the clownfish and how they are housed. If they are in a group in the tank, and they are all ½ inch – 3/4inch in size, then it’s a good bet they are all still juveniles. You shouldn’t see much aggression between then, just a lot of swimming together and making a ball in the corner or near a rock for safety. This would be a group that it is safe to pick any two fish you like best and attempt to pair them together. A clownfish that is alone, or even part of a small group needs to be watched closely for behavior. The largest or most aggressive should be considered a female already. If this is the one you want, then you should chose a clownfish that you know is a juvenile still- mostly judging by size and temperament. Choosing two clowns that are females, or have started the transition can results in two dead clowns, or one dead clown and one clown that is really beat up.

The next thing you need to consider before picking out your clownfish, is what type you want to get. There are six primary species of clownfish that you will find in the hobby today: Ocellaris, Percula, Clarkii, Skunk, Tomato and Maroon. Of those, you’ll find a huge – seemingly endless- variety of color patterns made from most of those species. The second most asked question I get is “Can I pair a marron clownfish with an Ocellaris clownfish?” or something to that effect. In general you want to stick with like species: Ocellaris with Ocellaris, Clarkii with Clarkii, Maroons with Maroons and so on. There are some exceptions like the Ocellaris seems to do just fine pairing up with the Percula. There have been some Ocellaris and Maroons paired up and bred even, but this particular pairing isn’t for the novice. As for all the different color and pattern variations of the Ocellaris and others, they can be mixed and matched as long as they are the same species. So a Snowflake can go with a Premium Gladiator and so on.

Photo by: melypr1985
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Clownfish are really cool because they have a symbiotic relationship with anemones. The fish is hosted by the anemone, a partnership that keeps the clown in the relative safety of the stinging anemone and the anemone feeds off of the clown’s poop. Clowns have also been known to grab food and feed the anemone that way. Clownfish have a very thick slime coat that protects them from both parasites and the sting of the anemone they are hosted by.

In my experience the Clarkii, Skunk, Tomato and Maroon are the most likely to host an anemone on it’s own. Now, this is strictly my opinion based on experience but I feel that Ocellaris and Percula have been bred so much and so often that I feel they have lost that innate need to host an anemone and instead will host the first thing they see as safe like your overflow. There are plenty of people who’s Percula and Ocellaris clowns are hosting an anemone right now, so that proves how inexact this hobby can be. Each fish in an individual and will do what comes naturally to them and makes them feel safe. If you want clownfish specifically so they will host an anemone, then I feel those fish will be your best bet. Having said that, I want to again say that each fish is an individual and no matter what you can force them to do what you want. Your clowns, no matter which you choose, may never host anything more interesting than your power head. On the other hand, your clowns may decide to host for you, but instead of those really nice anemones you paid so much for, they choose to host your GSP. Moral of that story? Don’t get clowns just because you want to watch them host a nem.

Photo by: JimSWreef
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One more thing you should consider before choosing the type of clownfish you wish to purchase and that’s temperament. All clowns can be aggressive, especially the female and even more especially when they are spawning. There are levels of aggressiveness among the species of clowns that should be taken into account. Maroons, Tomatoes and clarkiis are at the top of this scale. They can get quite large, with maroons reaching 6 inches or more, and have been known to draw blood when going after the owner during maintenance. The Ocellaris, Percula and Skunk are the more docile of the group, but can still pack quite a punch. My female Ocellaris still attacks my hand anytime I get near her.

All of these are important when choosing which clowns to go with. The temperament, size, pairing, willingness to host will all play an important role in how your clownfish will fit into your tank’s dynamic. Choose carefully, because once you have a pair they can live for upwards of 20 years if taken care of properly. Adding a third clown to the mix will more than likely end badly so go with your two favorites from the first. Keep an eye out for more about clowns in the near future.
 
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Zero Nitrates

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Great article!
Hey Meredith, I have an ocellaris that has developed a growth on her lip. I'm concerned it will become a issue with feeding. Any ideas what it could be and any options for treatment?
 

Mo-sachi

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Great write up! I do appreciate the beauty of clownfish. I keep 2x Spotcinctus, 2x Ocellaris, 1x almost naked, 1x Clarkii female in my 93g cube. they all do well together with no signs of bullying. The two Spotcintus and the Clarkii are hosted by my green carpet nem. the others have their little nook, like you stated. Thank you again for the information.
 

bairdimusprime

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Great article!
Hey Meredith, I have an ocellaris that has developed a growth on her lip. I'm concerned it will become a issue with feeding. Any ideas what it could be and any options for treatment?


check out this article as it may be Lymphocytosis
my picasso clowns have it. they breed regularly though and are in good health... its like fish herpes

http://edis.ifas.ufl.edu/fa181
 

Chrisfish

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Great article, thanks so much, clownfish are my favorite :)
 

William martinez

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Great article I have a snow clownfish and a white clownfish I was about to buy a midnight clownfish this coming weekend but I would like to know is this will be ok? Thanks
 

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One thing that most of us that spend a lot of time on the clown/nem forums and share experiences is that it seems that BOTH tank bred and wild caught clowns still very much have the instinct to desire a host, the issue is many try to pair up whatever clowns they happen to purchase w/ whatever anemone happened to be easy or easy to come by, and this usually means BTA.

Often the BTA is not a natural host anemone match to the clown, and people get frustrated when their clown(s) ignore that BTA
We are seeing in big numbers that almost if not every time you give those same clowns a natural host nem match as they would be found in the wild, they accept that host rather quickly, if not immediately.
This has sparked a big movement among many anemone/clown keepers to suggest finding a natural host anemone match to your particular clown species, and THIS is what most of us are finding to be key in obtaining that symbiotic relationship that most of us are drawn to in keeping these animals.

So adding to this, I would suggest reading on what anemone's usually host specific clown species, and check what those anemone's needs, whether that be rock or sand bed, high light or med-low(ish), flow.
This will help people design their tank or purchase an anemone that fits their needs and obtain successful hosting of clowns.

The best list I have found so far as to which anemone's host which clowns is in the book by Fautin and Allen, "Anemone fishes and their host sea anemones"
 

azbigjohn

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Another awesome article, @melypr1985 !

My Ocellarus clowns were the first fish I got (of course) and they are still with me... After having an RTBA in my tank for over a year, without any attempt to be hosted, my female finally hopped into the RTBA, 1 week before I took the tank down, and had to give away the nem...
4cb8d24feebd01cc609d1fc1bd196e22.jpg
 
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davocean

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Will a percula do well in a fish only tank?

Certainly, and many keep percula's and other clowns in fish only and often bypass keeping an anemone for them, but it's pretty common to see them kind of just stay in one spot or area, and possibly near something that makes them feel comfortable, sometimes being a powerhead or veggie clip!
Often they take up an alternative host to an anemone, and something like frogspawn or hammer may make a good alternative to an anemone.
 

gorrita

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Certainly, and many keep percula's and other clowns in fish only and often bypass keeping an anemone for them, but it's pretty common to see them kind of just stay in one spot or area, and possibly near something that makes them feel comfortable, sometimes being a powerhead or veggie clip!
Often they take up an alternative host to an anemone, and something like frogspawn or hammer may make a good alternative to an anemone.
That's awesome,thanks for the insight
 
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melypr1985

melypr1985

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Great article!
Hey Meredith, I have an ocellaris that has developed a growth on her lip. I'm concerned it will become a issue with feeding. Any ideas what it could be and any options for treatment?
That could be something as simple as an infection. It may need treatment with antibiotics in a QT.
Great write up! I do appreciate the beauty of clownfish. I keep 2x Spotcinctus, 2x Ocellaris, 1x almost naked, 1x Clarkii female in my 93g cube. they all do well together with no signs of bullying. The two Spotcintus and the Clarkii are hosted by my green carpet nem. the others have their little nook, like you stated. Thank you again for the information.
Some people have great luck with this, but for the novice it's not something I recommend doing. It would be extremely lucky for a newbie to be able to get away with that.
Will a percula do well in a fish only tank?
Yes! Absolutely!
Great article I have a snow clownfish and a white clownfish I was about to buy a midnight clownfish this coming weekend but I would like to know is this will be ok? Thanks
I wouldn't recommend it. It can work, but usually in a large tank with plenty of space for the clowns to have their own territory or as a harem as described in the article.
Another awesome article, @melypr1985 !

My Ocellarus clowns were the first fish I got (of course) and they are still with me... After having an RTBA in my tank for over a year, without any attempt to be hosted, my female finally hopped into the RTBA, 1 week before I took the tank down, and had to give away the nem...
4cb8d24feebd01cc609d1fc1bd196e22.jpg
Oh man! What good and bad luck! Still it's really cool when they finally decide it's a good idea to host a nem they've stared at for that long.

That's definitely not lymph. I would suggest making a separate thread in the disease forum so we can look closer at what that is and the cause. I do love those weird long finned clowns. They are just so cool.
 

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