Mixed African Cichlids

update of my tank..since I last posted I changed filter to a Eheim 2028 and a Fluval 4+ internal- the Eheim has made a massive difference to the water quality..I can't recommend one enough. The Eye-Biter has coloured up -took about 3 weeks from a dull silver to a bright blue with orange fins. Have added a male rostratus - fully coloured up rostratus are in my opinion the most fantastic of all African Cichlids, mine has little colour but has just started to get a bit bossy in the tank and has developed darker markings and a hint of red and green on its body so I'm hoping this is the start of it gaining its full adult colour, also added a Cameroon Crab - beautiful red, purple and white - though it runs like lightning when it escapes, I have to use chop sticks to get it back in the tank...