You may be ok. Snowflakes are a unique moray that feeds more on crustaceans than fish. If you keep it well fed with meaty crustacean food like krill and shrimp it might work. Don't be surprised if you do lose a fish or 2 though, they're still eels
20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"
I can tell when my snowflake is hungry due to it coming out and swimming around, chasing my clowns a little bit, and also it attacks my power head( don't know why) but my clowns can fit in its mouth I looked for signs of it being hungry I feed my snowflake jumbo shrimp from Walmart and he/she goes crazy just seal your tank as they jump a lot.