Don't forget Sturgeon (unless they're all too big).I can kinda simplefy it some
lungfish-Australian lungfish (N. forsteri) 5' Queensland Lungfish its considered the most primitive of the extant lungfishes
bichirs any that i list below
P.endlicheri endlicheri ('saddled' or 'red' bichir)- 32", possibly more
(subspecies)P. endlicheri congicus ('giant' or 'congo' bichir)- 39"
P.bichir bichir-30+ ''
P.ansorgii*
from North america the (Amia calva) or bowfin 2 1/2'