epizoic
Concise Oxford English Dictionary © 2008 Oxford University Press:
epizoic /ˌɛpɪˈzəʊɪk/
▶adjective Biology living non-parasitically on the exterior of a living animal.
– derivatives
epizoite /ɛpɪˈzəʊʌɪt/ noun.
epizoite /ɛpɪˈzəʊʌɪt/ noun.
'epizoic' also found in these Oxford entries:

