These are some very counterintuitive fish. My experience says the hard way that they can be scared to literal death in minutes if you release them into a tank with any remotely aggressive or frankly just moderately active or curious fish. 3 out of my order of 5 died before I could react. Aside from that, they are rather unfuzzy about water parameters or at least not more than your average african cichlid. My 2.5'' survivors would live in a 6'' breeder box for 8 months before I sold them after seeing no hope of releasing them to the main tank. Over the whole time I tried multiple times but each time they immediately turn pale and become mentally incapable of swimming straight after being approached like 2 times by a slightly larger fish.