Hey guys, I want to buy a Synodontis for my 55 gallon mbuna tank. I dont want to buy Synodontis petricola or Synodontis multipunctatus because they are way to pricey. I wanna know if I could add a Synodontis nigrita a.k.a the lace catfish. WOuld he be to big for my tank? plus should I add him before or after the mbunas are placed in. The tank isn't stocked yet.