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Chondrichthyes is characterized by
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placoid scale and ventral mouth.
Chondrichthyes is a class which belongs to subphylum Vertebrata of phylum Chordata. This class comprises of cartilaginous fishes. These fishes show the presence of a ventrally located mouth. The skin of these fishes is covered by minute placoid scales.
Ctenoid scales and terminal mouth is present in class Osteichthyes.
Ctenoid scales and terminal mouth is present in class Osteichthyes.
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