I have a 120 gallon african mbuna tank. I accidentally bought 2 jewels thinking they were peacocks...oops! One of the jewels keep getting tattered (his dorsal fin was even half gone at one point!) so I started watching very closely. To my surprise, they are actually fighting each other...no other fish. I went and got a whole bunch of rocks to provide more hiding spots and unfortunately a new gash showed up on his head anyway. Should I get more jewels or would I have a bunch more fighting jewels?