Chainlink eel not eating

[Dreamkiller]

Hey. My chainlink eel has completely stopped eating everything. I have a 75g fowlr tank with plenty of hiding spaces. He stopped eating for about 9 days now. I've tried every type of food I can think of. From marine live ghost shrimp, clam, squid, mussels, freeze dried krill, silverslides, to raw shrimp chunks. All my other marine life are eating and are very energetic. My parameters are as follows:
Salinity - 1.022
PH - 8.2
Amm. - 0
Nitrate - .20
Nitrite- 0
Chl. - 0

Attached is a video of him

 

[Dreamkiller]

This is the video

 

[Dreamkiller]

Just started prazipro treatment just in case it's flukes