An african lungfish looks like the one you bought from me. A south american lungfish has more spots and is usually darker in colour. As for an aussie lungfish you will not find one at your local pet shop, they need to be ordered in. Lo sai can get you one, we were going to do an order and it was so close but we needed one other person. He might do another order if there are enough people.
Have to disagree on some. Lol! Sorry snow.
South American lungfish have yellow or white spots when young and have black color and the spots gradually disapear as it grow and the base color turns to gray. Also fins are more shorter than african species.
African lungfish will depend on which species/subspecies.
West african lungfish can varied in base color and patterns. From lots of spots to spotless. Base color can range to pale gray, brown, dark gray, tan or any of this mixes.
Slender african lungfish can look very similar to south american lungfish but the spots will sometimes remain or disappear except the spots are dark instead of yellow or white on SAL. Also the fins are much longer.
Marble african lungfish can varied on patterns and base color as well depend on location being caught. Compare to the West african lungfish, marble african lungfish have marble patterns as the name already called it. They also grow much bigger than any other lungfush species.
Gilled african lungfish, again can varied in base color and patterns. Bosy shape have very similar to aussie lungfish but with thinner and shorter fins and the scales are much smaller than ausie lungfish. The external gill remains the rest of it's life unless damage but will grow back.Smallest of the lunfish species but the most aggresive.
The one you got from snow is a west african lungfish (Protopterus anectens anectens). Most common lungfish around.