Convict Blenny

Swiming in the Andaman Sea in Phuket about 100m off the Amanpuri Resort I was bitten by a black and white eel-like fish (6-8" long). It continued to follow and nip me across both the shallow reef and sand bed and only stopped after I swam to the beach. Although a regular open water swimmer, I have never experienced this before. I can only assume it mistook me for a sea creature and was either looking to feed or form a symbiotic experience. Could it have been a Convict Blenny? Or any other suggestions?

Difficult to say, Blennies are very small, could be a small moray eel although they don't usually attack, but if you get close to any nest fish don't like it and try to see you off!