Beverly,

They've been in a 55 Gallon tank since I got them, they were my first fish so I didn't quarantine them. I haven't reaquascaped or added any new fish. Their tank mates include a six line wrasse, a green clown goby, a purple gramma and 2 cleaner shrimp and assorted crabs and snails.

All I can say is that it is a little strange that they started fighting after so long together. How are they doing today? Still scrapping?