I'm not sure if this belongs in this forum or the bottom feeder one. I have two clown loaches, among other fish. I've heard that they like to be in pairs of more than two, so I went and bought two more today. After about 20 minutes, one of the new ones is in the group, and the three of them are swimming around exploring. The fourth one, which is an original one, is at the top of the tank and won't come near the other ones. Does anyone know if this is abnormal, or he'll come around after awhile. My tank is a 90 gallon, ph around 8.0, ammonia and nitrites around 0, and temp at 80. thanks.