The substrate must be comfortable and in case you elect to place rocks make certain They're clean river rocks. This helps make them on the list of rarest fish in the world. Bonnethead shrimpfish is pinkish-brown in colour and have a particular organ on their tails that helps them survive https://share.evernote.com/note/d4840191-7831-eaef-1e26-f5ee2fda437c