the fish gangsters

[aquaticgypsy]

I've noticed that 2 of my fish are acting funny. These fish are in separate tanks, so unless i'm doing somthing wrong, thier behavior isn't related. My one glass fish has been hanging out with the rosy barbs instead of schooling with the other glass fish like he used to, and when the other glass fish get to close, he drives them away! ???  He doesn't nip at them, and I noticed that he always was aggresive with food, but never toward the glass fish. Maybe it's just his personalitey, but I think this fish is acting more " disturbed " than usual.
 Also, I have 2 goldfish, and I caught one nipping at the other one. That was really wierd, because he was never aggresive before. If anyone knows what's going on, please let me know. Thanks!

                                  ~aquaticgypsy

 

[colesea]

Could be 101 reasons.

Check your temps, sometimes normally "not aggressive" fish may become more aggressive as the temps get warmer and spaz out their metabolism. They get all hyperactive, and display that hyperactivity as increased bouts of sparring and nipping.

You glassfish might have a case of mistaken identity. Maybe it thinks it is a barb. Who knows. One of the barbs could be sexually active, and is attracting the glass fish. Sometimes fish get pheramonal signals mixed up, especially if the sexual ratios aren't appropriate in the tank.
~~Colesea