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Ctenops nobilis
August 6, 2011
5:18 pm
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Had moved a couple of Ctenops brooders to a separate tank and finally spotted the fry yesterday. I have fed them on BBS today. Fingers crossed /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />
That's a NLS pellet in the second pic so you can guess their size.

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August 7, 2011
2:36 am
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nuchal man
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Congrats on the spawn and those are some great pics, it's not an easy fish to get fry from. Here are some bad photos of the ones I was working with at the Shedd Aquarium in Chicago when I was interning there. The babies have an adorable color pattern.

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Male

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fry from one of our spawns

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another bad photo of one of the fry

August 7, 2011
9:02 am
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Colin
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Good pics none the less! /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

I see these on import lists just now, never tried them myself but getting tempted lol

August 7, 2011
9:47 am
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Stefan
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Well done both of you!

They certainly represent an interesting 'niche' in labyrinths Colin!

August 7, 2011
10:40 am
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Matt
Málaga, Spain
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Brilliant. /cool.gif" style="vertical-align:middle" emoid="B)" border="0" alt="cool.gif" /> What temperature range and general water chemistry do these require guys? There's conflicting info about...

Cake or death?
August 7, 2011
2:54 pm
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Sam: Those are some excellent pics. Do you recall how many fry per spawn you got. I count less than 10 in my tank. What did you offer as a first food?

Matt: I keep mine in fairly hard water and the temp is around 28 C. I think we need to update the knowledge base article as I feel they are paternal mouth brooders. Maybe Sam can verify?

August 8, 2011
7:31 pm
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nuchal man
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They bred in a community 500 gallon asian community display. The water at the aquarium is from Lake Michigan and is about 7.6-7.8 pH and it's very hard, pretty much liquid rock. There actually was an ich outbreak on the display and some salt was added to the tank. They spawned after a few water changes from this point.

Water temp was around 78-80F. I completely agree with Beta, they are a paternal mouthbrooder. I was surprised at the amount of fry the male was holding. He spit about 70, and they are pretty good size. First foods were baby brine shrimp and copeopods.

I found this species to be jumpers and I had issues with high levels of conspecific aggression, even in a 500.

August 9, 2011
6:50 am
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Matt
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Thanks for the info guys, will make the necessary changes asap. Are both sexes aggressive towards one another?

Cake or death?
August 9, 2011
9:02 am
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nuchal man
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I didn't see any difference in aggression between males and females. For such a fragile fish, they can be quite nasty to each other.

August 18, 2011
3:25 pm
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Only 3 survivors!
Here is a video of one of them taken on my mobile cam.

August 30, 2011
9:35 am
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Matt
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Oh no. /sad.gif" style="vertical-align:middle" emoid=":(" border="0" alt="sad.gif" /> What happened to them?

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November 9, 2011
4:18 pm
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Matt
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Colin and others, what level of intraspecific aggression have you experienced with this species?

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November 9, 2011
4:34 pm
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Colin
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A lot!

Once you get a dominant fish they keep harrying the rest of them, I have 6 in a tank now and you always have a dominant fish

BUT there are no injuries and no split fins, just chasing

November 9, 2011
4:46 pm
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Matt
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Is the alpha individual male or female Colin, or does it vary?

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November 9, 2011
5:31 pm
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Colin
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I dont know how to sex them yet.... will keep an eye on the ones i am keeping though

November 9, 2011
10:33 pm
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Matt
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Hmmm, females lack rows of dark spots on the body and have a more 'marbled' patterning than males according to stuff I've been reading today but no idea if that's correct.

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November 9, 2011
10:41 pm
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Colin
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what have you found about max size?

November 9, 2011
10:48 pm
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Matt
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The answer is best described as 'various'. /laugh.gif" style="vertical-align:middle" emoid="Laugh" border="0" alt="laugh.gif" /> Anything from 4 to 10 cm, basically.

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November 9, 2011
10:52 pm
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Colin
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yeah thats basically what i have found too - the ones i have are about 5cm SV and 6-7TL

ctenops.jpgImage Enlarger

ctenops2.jpgImage Enlarger

November 11, 2011
1:13 pm
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Matt
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Apparently these are "4-5 inches" total length. They look it, too...

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