I know these aren't monster fish but this is my desktop tank and i thought the behavior was really interesting. For some reason I have one cherry barb that took a downhill turn throughout the day. Now he is laying on the bottom with his fins spread out taking large breaths but he can still swim. When he swims though he seems to twitch a lot and gulp his mouth open and closed rapidly. Since he has been doing this the platy I have has been hanging around him a lot. She will lay down next to him and rub her fins and body against his. She will also just go and hang around him a lot. Anyone else see something like this? I am not sure what is wrong with him he seemed healthy not long ago so if anyone has ideas I would like to save him. He is the lone survivor of a crap batch from a chain store since that is all I have near me. All the other fish are fine.