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Hey Guys
I have a large group of Cory Aenus in my 25g tank, (8)
and I would like to have them breed.
I am sure that at least 4 of these are females.
The tank is 80F, ph 6.8, hardness ~100ppm, planted, ammonia 0 nitrite 0 nitrate >10ppm.
Filtered by Cascade 150 filter.



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Lower the temperature to about 75 degrees. Then once it's that temperature for a while, do a large water change of cooler water to lower the tank's temperature to about 70 degrees.

Bronzes are easy to breed, so that should be all you need to do.

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I'm not your neighbor, you Bakersfield trash.

You also need to have some patience & feed them well before trying what Cory Addict, suggested & goodluck.


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Yeah. If they're still reluctant after the big water change, you should try conditioning them. Feed them lots of live and/or frozen foods for a week or so, and then try the water change again. That should do the trick.

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And when he gets to Heaven, to Saint Peter he will tell: "One more Marine reporting, Sir! I've served my time in Hell."

Remember though, not all Corys need a temperature drop. My Pandas should do in theory, but a big water change and live food is all Mata Hari and her suitors have ever needed


Panda Catfish fan and keeper/breeder since Christmas 2002

Will the temp drop affect my Angels in any way?
I have been feeding lots of live/frozen foods and fresh veggies, both for the corys and to condition the Angels.
The angels are spawning like crazy, and today after w/c the buenos aires tetra were doing spawning runs lol
Just seems the corys arent interested!


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If the temperature drop is implemented with care (i.e., spread over several hours), then this should not unduly affect your Angels. Sudden temperature drops are a different matter, unless the drop is less than 1°C. A 2°C drop implemented over, say, 4-5 hours might do the trick. However, the Corydoras species under consideration heavily influences this. Some species need a temperature drop, others (such as my Pandas) will spawn without a temperature drop (indeed, on at least one occasion they spawned after a 1°C temperature rise) provided they are fed well with live foods and given a big water change. For some species, the sudden influx of new, highly oxygenated water is a more important stimulus than temperature, but again, your species may vary.

Remember also that some species will spawn at temperatures as low as 18°C (my Pandas again), while some others will prefer something closer to 22°C. If your tank is currently set at, say, 26°C, then a drop to 24°C won't harm your Angels, and should induce spawning in your Corys if they are well-conditioned. A drop from 23°C to 21°C, however, needs to be implemented with more caution from the standpoint of your Angels.


Panda Catfish fan and keeper/breeder since Christmas 2002

I have to agree, that it isn't always important for the temp to drop in the tank...I usually do about 20-25% water change on the 125, and I know the temp being off only a degree or two from tap to tank isn't going to make that big of a deal, but doing a good gravel vacumming, and feeding them well, BOOM off the ladies go with their suitors behind the piece of driftwood, for a little fun It is this type of fun that I am anticipating watching tonight As I managed a 30% water change and gravel vac this afternoon, and the blood worms are defrosting Can't wait for more fry

heidi michelle



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"I've got a great ambition to die of exhaustion rather than boredom." Thomas Carlyle

I have only bred two species of fairly common fish (aeneus and panda), but from my experience, they only breed when I neglect the tank.

They spawn when you neglect the tank?

You must have some highly individual Pandas then ... mine tend to be at their most frisky about 2 hours after a water change, although they'll also spawn 3 or 4 days after before the next water change takes place.

Oh, and as of last night, Mata Hari and the gang have spawned a total of eighty-one times since May 5th, 2003. Not bad going, eh?


Panda Catfish fan and keeper/breeder since Christmas 2002

Yeah, it is quite contradictory to the experiences of most, however, fry usually pop up when I forget to do the bimonthly water change.

Bi-monthly???

Ye Gods, my Pandas think they're hard done by if they have to wait more than four days for a water change and gravel vac ... twice a week I lug buckets about the house keeping Mata Hari and her suitors happy!!!

However, this probably accounts for the 81 spawnings I've had to date


Panda Catfish fan and keeper/breeder since Christmas 2002

I assure you, your water changing schedule is not at all common. So long as my NO3 stays within the near zeros, I see no need to change my water with the said profusion (especially in the CO2 fed planted tank in which most of the c panda are held). I am also forced to pay for a third of the water bill (not to mention, as of last week, I now have six tanks, all of which require much maintainence), so I can't be asked to partake in your vigorous 4 day water changing schedule. Corydoras are not exactly my cup of tea, either, so I am happy with my existing fry, most of which are nearing adulthood. Even when I was in my cichlid breeding phase (angels, blue rams, convicts), water changes came ONCE a month, and yet, I managed; and apparently, so did the fish, for the spawning commenced for approximately three years at one batch every three (or so) weeks. To top it off, water comes out EXTREMELY hard from the tap, and thus, the RO unit sees wuite a bit of work--and is also a very water wasteful process, so again, I simply cannot afford a twice or even weekly PWCs.

Aside from the corydoras and the aforementioned cichlids, cardinal tetras, L-66, P. maccus, discus, and white clouds all find my water changing schedule satisfactory, as is evidenced by their relatively common spawnings.



Last edited by Cup_of_Lifenoodles at 21-May-2005 15:52