freshwater tropical community fish

Question
we have just bought 3 tropical community fish and some other ones as well. 3 of the same kind are all  staying near the top of the tank near the heater. is there something to be worried about?

Answer
This may be due to stress. If you see signs like salt-like spots, bumps, fuzzy spots, they are not eating, cannot stay upright, or other odd behavior  or signs you should be worried and treat them but if none of these symptoms are present chances are it is the stress of moving to your new tank. Also be sure the water temp is right in the entire tank. Take a thermometer and make sure it is between 74-85 degrees in the whole tank. Otherwise all should be ok for now. Just keep a close eye on them. I hope this helps. Let me know if you need more help.