THey are kept in freshwater as babies but get to brackish as juves and marine as adults the one your thinking of is not this one but also called a freshwater snowflake eel but this one in your pics is the TRUE SNOWFLAKE EEL
Also can I see the pics of the bichir with the cross or a link on were spiritofthesoul and the other guy wrote that??I tried looking but nothing came up on google just your threads???