Hi jourdy288
I've had bettas with corys, even bronze C. aeneus several times and them best I can tell you is that sometimes it may work out and sometimes it won't. The thread you saw is questionable at best.
Some time ago I had a betta named Ruby and he got along wonderfully with his cory tankmates. He even learned to feed off the bottom and sometimes shared their cave with them. He was my first betta and I loved this fish.
After him came several others that did not fare as well.
The problem with keeping them together is not just a matter of temperament, but one of environment. Bronze (C. aeneus) corys come from cool free flowing rivers and bettas do best in still warm ponds. Corys can manage a strong current from the filters, but if it is good for them, it will probably push the weaker bettas around. While even the shorter finned females might seem to like it, they will tire easily, wear themselves out fighting it, and have a shortened lifespan.
If you keep the filter movement slow, and the water warm, the corys will not thrive. If any of the bettas has a less than cheerful disposition, that will also stress the corys.
thanks for this info, someone told me to put corys with my Betta too
Corys are a schooling fish which means that they MUST be kept as a group. At the very least, please keep several of them. If you have only one now and get another, watch when you introduce them. They will be so happy to see each other!
I think you might like to see the first link on the following thread. It will give you a better idea of the way cory live in their natural habitat.
[URL="http/www.fishforums.net/content/Corydora...-In-The-Amazon/"]http/www.fishforums.net/content/Corydora...-In-The-Amazon/[/URL]