南美肺鱼 / South American lungfish

My skinny fins and air breathing show your close fish relatives kept changing too. No evolutionary pause button!
我纤细的鳍和呼吸空气的本领说明，你的近亲鱼类也一直在改变。演化可没有暂停键！

Sources
The genomes of all lungfish inform on genome expansion and tetrapod evolution
https://www.nature.com/articles/s41586-024-07830-1
Cardiorespiratory interactions previously identified as mammalian are present in the primitive lungfish.
https://doi.org/10.1126/sciadv.aaq0800
Species reference
https://en.wikipedia.org/wiki/South_American_lungfish

Research context
South American lungfish provide a second major living lungfish comparison. Their reduced fins and respiratory biology show that living relatives of tetrapods have also undergone extensive specialization.