A 40 breeder does not really fit the criteria for a glass banger tank. I would agree with the post ^^^ Salvini would be a good choice for a while they top out at 7-8" (males) females are much smaller and have lots of personality with some great colors.
I was thinking green terror at one point but they are fairly active and a 40B just wouldnt cut it for one. I might have to look at some more cichlids because this thread is making me want to chamge up the tank... I already researched a few but i know for a fact i didnt do enough research.
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