Numerical estimates of parasite biodiversity have shown that certain coral fish species have up to 30 species of parasites.[51][52] [53][54] The mean number of parasites per fish species is about ten.[51][52][53] This has a consequence in term of co-extinction. Results obtained for the coral reef fish of New Caledonia suggest that extinction of a coral reef fish species of average size would eventually result in the co-extinction of at least ten species of parasites.[51]