I recently bought a betta. I keep him in a 5 gallon acrylic tank with plastic plants & log, gravel, small heater and whisper filter. He's been in there about 5 days. Today I bought 5 spotted corys & added them to the tank. That's all I'm going to put in there for fear of overstocking (which I've probably already done.)
Anyway, the betta had been doing fine before I added the corys. He would hide sometimes, but would also spend time swimming around. Now that the corys are there, they bother him, not really attacking him, but just curious and swimming around the betta. The betta just wants to get away it seems, but the corys are really fast and active, and don't give him much rest. I'm not sure if the betta is swimming and playing with them or just trying to avoid them.
Help! Is it appropriate for the betta to act this way when new fish are introduced?