Hemichromis fasciatus fry

Here is a photograph I took today. Note some of the fry have five spots on the sides while others have a horizontal solid bar runnig across the body. These Hemichromis fasciatus fry and constanting begging for food. In addition they are nipping at each others fins. I am lowering the temperature some what and will be adding some other fish to the tank, preferrably dither fish to counteract the intraspecific aggression.