Wild corries

[suntsu69]

Hi, all
I have got 5 C.arcuatus and 5 C.aeneus gold shoulder, all wild caught, size XL. Put them in 100L tank,temperature 25 Celsius, some plans and little java moss. Feed them twice a day with Tetra TableMin, frozen bloodworms, frozen brine shripms, FD tubifex. Gave them live white worms, but they do not like it. After a month tried to breed them. Droped a temperature to 21 degree, start with 50% water change, and then 30% everyday. All changes was done nighttime, with as much water splash as I can. Also added a pump to create a current. But nothing happens. After 10 days I gave up. Any advice how to proceed?
One of the arcuatus females is very fatty, another not so wide, but there is clear 2 females and 2 males and I'm not sure about the 5th. With aeneus, there is no such big differnce, but most likely also have both sexes.

I have bred successfuly C.paleatus and C.panda, but not wild ones.

[MatsP]

Wild caught cories are often a bit harder to breed than captive bred ones. The reasons for this is probably many, but one of them is that they take longer to get settled in a tank, and that they need more of a trigger to spawn. They may also be more directly affected by their internal body clock - many fish seem to have an inbuilt ability to tell when it's natural spawning time, even if it's completely the opposite season locally - e.g. the fish still spawn in February/March onwards in Australia, where it's just coming up towards WINTER, rather than rainy season in South America.

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Mats

[suntsu69]

Is February/March a normal breeding time? If it is, timing is right. Any specific advice? Is there any type of feromones or something similar? What is the minimum temperature for this wild fishes? I was afraid to drop temperature below 20 degree. I know some cories need cooler water, but seems this is not the case.

[MatsP]

I don't know when those particular fish breed - in South America, nearly all fish breed at the beginning of rainy season - when this is varies a little bit, but it's generally around February/March time. However, not ALL fish follow this pattern - some spawn a bit later - middle/late rainy season, others just before rainy season starts. I'm not aware of any fish that specifically spawn in dry season - there are probably fish that spawn/give birth ALL seasons - such as live-bearers...

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Mats

[kim m]

Well...C. arcuatus are not easy at all...seems as if most spawnings has been accidental!

But the "aenesutype" you have should respond to your treatment I think.