adey wrote:
might have solved the mystery!
just had a conversation with my son(off from uni) and said the 2 o's have been lip-locking all week!! perhaps that may have caused this!
how stupid of me not to realise

although i do work all day and my son says thats when its been happening
had them both at the same time so both the same size (about 2")
they seem to get along fine so do you think they are 'playing ' or sizing each other up? no other visible injuries
with this size, they are just sizing up who is the boss. mating ritual is very far from reality.
presently i have two small oscar, Survivor and PinHole, about 2" both. i have seen Survivor attacking PinHole making the latter hid e under the pump. Survivor even bullied the big angel fish.... first time for me to see such
bully small oscar.