I got a betta fish the other day, and put another small, very fast fish inside. the small fish is about 1 1/2" wide. he seems like he is able to outrun the betta. i notice that the betta will chase the fish around, and on rare occasion, nip at him. in the beginning, he would flare at him. i was just wondering if it is ok to keep these two together. i talked to someone at a pet store, and they thought that the fish looked like a gold fish (i know that goldfish can be white/gold, but this one is not...).
also, another concern. i was told that the amount of ammonia the fish puts out may affect the betta since they are very sensitive to the ammonia levels. can this be?
lastly, can the betta chasing the fish, hurt the betta? i know that when you use the mirror on them, you do not keep it in front of them for long since it can hurt them.
in general, i would say that the betta is intrigued by his new friend...