bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii
[ Syn: dipnoi , subclass dipnoi ]
bony fishes of the southern hemisphere that breathe by a modified air bladder as well as gills; sometimes classified as an order of Crossopterygii
[ Syn: dipnoi , subclass dipnoi ]