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Pachypanchax spp.
December 4, 2012
8:33 am
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Matt
Málaga, Spain
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I've received some nice photos so will endeavour to update the profiles over the next day or two. :)

Just wondering if anyone's bred any of these? Do they reproduce in a similar way to Aphanius, Cyprinodon, etc.?

Cake or death?
December 5, 2012
1:58 pm
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coelacanth
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They're unfussy, will spawn on mops, moss, plants, anything suitable. Feeding is easy, they'll eat dried food as easily as they'll take live or frozen, and will even eat worms their own body length. They will sell their tiny souls for wingless fruit flies or pinhead crickets. Not to be trusted with smaller fish, much like the larger Aplocheilus. Water conditions seem to be of little concern, same with temperature, extremes should be avoided. They will jump, but not to the extent reported in some aquarium literature, food and sex being more important to them than a pointless death. In a suitably-decorated aquarium, some fry will survive, but otherwise eggs (or whole mops) can be removed for separate hatching (the time for which is temperature dependent). There is usually some aggression, but it is limited as long as there are refuges. One male can easily dominate a grop in a 15 gallon aquarium, so its a good idea to occasionally move the alpha male out to allow the other boys to have a turn, otherwise all the fry may be siblings.

More than one colour morph may be present in a single group, orange and blue forms turning up. 10cm is possible for a male, they are also a fairly long-lived fish, several years being not unusual.

The excellent Manchester Museum has these in one of their Madagascan herp exhibits in the water trough, and they are doing just fine on whatever insects the other animals miss, spawning and producing fry without any intervention. 

December 6, 2012
1:40 pm
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Matt
Málaga, Spain
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Think that about sums it up! Brilliant, thanks Pete.

Cake or death?
December 7, 2012
9:29 pm
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chaudax
Somerset, England
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Having just got some Pachypanchax omalonotus and some Pachypanchax sakaramyi 'last week, I'm looking forward to seeing if these guys are as easy to breed as they seem to be.  I've been raiding our keepers kitchen for the wingless fruit flies and I can confirm that they don't last long. :)

December 13, 2012
1:09 pm
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coelacanth
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Howdo Shaun, I'll be surprised if you don't already have eggs by now. Check around the filter if there are no mops in yet,

December 14, 2012
1:06 pm
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Matt
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Are they aggressive towards other species?

Cake or death?
December 14, 2012
1:48 pm
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coelacanth
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I suppose a male might see a similarly-shaped fish as a territorial threat, but they don't really even damage conspecifics unless they are too cramped, so not aggressive but potentially opportunistically predatory (size dependent).

December 18, 2012
12:25 am
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chaudax
Somerset, England
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No eggs as of yet, but the big male has been colouring up over the last few days, I'm going to have a good root around tomorrow to see if I can spot any eggs,  

December 18, 2012
12:27 am
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chaudax
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Also got given some Pachypanchax playfairi fry a few days ago, but they are tiny and will be a while before they start spawning

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