Zanclidae
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Zanclidae is a family of marine ray-finned fishes belonging to the suborder Acanthuroidei within the order Acanthuriformes. It contains one extant species, the Moorish idol and a number of extinct spe
Eozanclus fossil
Fish fin
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Fins are moving appendages protruding from the body of fish that interact with water to generate thrust and lift, which help the fish swim. Apart from the tail or caudal fin, fish fins have no direct
Skeleton of a lingcod, a ray-finned fish
Lobe-finned fishes, like this coelacanth, have fins that are borne on a fleshy, lobe-like, scaly stalk extending from the body. Due to the high number of fins it possesses, the coelacanth has high manoeuvrability and can orient its body in almost any direction in the water.
Pectoral fin with fleshy lobe of Latimeria chalumnae (Citron / CC-BY-SA-3.0)
Skeleton of the pectoral girdle and fin of the extant coelacanth Latimeria chalumnae (Citron / CC-BY-SA-3.0)