Silver Shark Issues

[lily-rae]

anyone here want to help solve my shark thing

 

[nath1]

give us a clue??
nath1

 

[lily-rae]

give us a clue??
nath1

well we have had them a long time and they are near on twelve inches now but two are playing up like never befor and they swim side buy side as if super glued but iv researched and its well know that they do not or cant spawn in regular setups its all done by professionals in a lab. but these two are having none of it with the other fish and one of them is even chasing the other two sharks off its not hurting them just running them off. but they have all swam together since babys with no problems and its all change now im a bit worried for the other two sharks as they have always benn jumpy and a bit nervous. so what do you think.