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NOTE: Please excuse the error in our video which states that eels are jawless fishes. Eels are not jawless fishes; the jawless fishes are lampreys and hagfish (also known as slime eels even though they are NOT eels) belonging to the superclass Agnatha. Eels are ray-finned fish belonging to the superclass Osteichthyes. What is a fish? If you're ...
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