What size tank? 75+?
Zebra may eventually take out most of your CUC but should leave your fish alone.
Our snowflake made it to 18" in just 2 years and ate 1.5" damsels as well as 3" frozen silversides.
It started as a 6", thinner than a pencil.
It literally looked like a colorful earthworm.
It was 23" long when it died at just 6 years old.
(They should live for at least 15+)
Some people recommend feeding large krill instead of silversides.
After 6 years, ours went on a hunger strike when we tried to switch its food and then wouldn't take the frozen silversides again.
It died after not eating for 2 months.
Very cool eel. Couldn't recommend it with other fish less than say 6"?