 The piscivorous (affected by both predation and competition from Nile perch), molluscivorous and insectivorous haplochromines were particularly hard hit with many extinctions.Others have become extinct in their pure form, but survive as hybrids between close relatives (especially among the detritivores).The zooplanktivores have been least affected and in the late 1990s had reached densities similar to, or above, the densities before the drastic declines, although consisting of fewer species and often switching their diet towards macroinvertebrates.