The polypterids (bichirs and ropefish) are extant basal actinopterygian (ray-finned) fishes that breathe air and share similarities with extant lobe-finned sarcopterygians (lungfishes and tetrapods) ...
Bichir, pronounced “be-sheer,” are considered living fossil fish. Also known as “dinosaur eels,” these fish have many unique features. Read on to learn everything you need to know about what makes ...
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