ok i have a list from a reliable source:
leaf fish
rogue/sailfin scorpionfish
gumdrop coral croucher
harlequin bass
longnose hawkfish
flame hawkfish
dwarf lions (antennata, radiata, fuzzy dwarf, dwarf zebra, fu manchu)
golden dwarf eel
spaghetti eel
saddled valantini puffer
anglers
maroon clowns
keep in mind most of these fish would have to be the only fish in ur tank aside from the gumdrop coral croucher and anglers, the gumdrop coral croucher needs 10gal and the anglers need 20 so u could put one of each in there, just a suggestion