Hi Inchworm,

I don't use CO2 on this tank, and the O2 levels are fine to the best of my knowledge as the water is aerated by my wet/dry filter. The temperature doesn't fluctuate too much in relation to the lights, but I think you're right that there is at least some food about for the planaria. I ...

I appreciate your suggestion. I hadn't thought of the possibility of a bacterial infection that another cory might be grooming away. However, as the cory I took out is improving fairly quickly in another tank with similar water parameters, I suspect the larger gossei rather than the anything else ...

I'm curious if others have experienced aggression with their C. gossei. I had four males in a planted 10 gallon tank (yes, I know that's small for them). The other occupants are two Amano shrimp and two small killifish, neither of whom interact with the cories. One of gossei kept turning up with ...

Well, finally after eleven days the school of C. sterbai have mellowed. They still school against the glass often, but they come and eat when I feed them and they look more at home. I hope they continue to relax further, but they're finally getting to the point that I can enjoy them.

And if I'm ...

I have three pictures to share: one of the way these corys have been behaving all too often, and the other two of them nicely foraging for a change.

http://home.pacbell.net/klingham/incessant-schooling-clipSmall.jpg

This a picture of my Corydoras sterbai schooling incessantly â?? up, down, back ...

As of last night, for the first time the corys were willing to stop schooling against the glass when I fed them tubifex worms during the day. Last night, using a red light, I finally also observed them actually resting - it took them seven days to get to this point!

The three younger corys are the ...

It is a normal behaviur for all corydoras in the begining...
they are "exploring"...
After few days they will eaither settle down or start to breed like mine doo today :D
regards
Vedran

Thank you, Vedran, for sharing your experience. Although I used to have many aquariums, it's been a number of ...

I have added five Corydoras sterbai to a 38 gallon planted aquarium. My tank is relatively new, although the water has been stable for about a week and a half now. I added first two C. sterbai, then three more three days later. They have been schooling constantly for four days along the aquarium ...