Magnificent snake eel

[Sal10104]

Hey everyone i found a great deal on a magnificent snake eel but before i buy things i want to make sure it will get along and what not so i just have a few questions

Are they Very hardy/disease resistant?

Will it fight with my fish?

1. 4 inch yellow tang

2. 1 inch tommani tang

3. 2 clownfish (one i know is too small currently growing them out in qt)

4. 1.5 inch flameback angelfish (africa)

4. 9 inch golden dwarf eel (my main concern about fighting)

are they resistant to swings in parameters?

how big do most captive Ones get?

Thanks in advance