Cyprididae is "the most diverse group of freshwater ostracods".

[3] Around 60% of genera in the family are endemic to a single zoogeographic region.

[3] The family contains 16 subfamilies, and is most diverse in the Afrotropical realm, with over 300 species in 45 genera.

[3] Many Cyprididae occur in temporary water bodies and have drought-resistant eggs, mixed/parthenogenetic reproduction and ability to swim.

These biological attributes pre-adapt them to form successful radiations in these habitats.