I would second that, almost certainly, from your description, a
(Pseudotropheus) demasoni (or Mbuna as we commonly call him in this house),
check the picture at http://www.malawimayhem.com/profile_show.php?id=277 and
see if it matches. Surprised at the level of agression though. Mbuna
incidently means 'rock dwelling' which is a clue over the sort of territory
it prefers (and will fight over).
Hope that helps
Rosie


My first choice would be a Pseudotropheus demasoni. Otherwise,
Cynotilapia afra? Pseudotropheus elongatus? Some of the Labeotropheus
and Labidochromis approach your description.
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