firemouths = 13-14 inches
jewels=15 inches
gourami (is he a dwarf?)
DG 2-3inches ...reg blue 4-6 inches
rts = 5-6 inches
so without anything else, you have approx, 38 give or take, inches of fish..
jacks will get 8-9 inches
green terrors will get 8 inchs and red devils can get up to 12 inches (both of these are super mean and I dont think your other fish will appreciate either of them)
oscar can get up to 14 inches....
so IMO out of the ones you have listed, id go with a dempsey
measuring fish at juvie size or the size they are now, is fine but not when stocking ...its really important to find out their adult size so you dont end up with overcrowding and major fighting
