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Longfin and shortfin eel
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Longfin eels can be identified because the dorsal fin is longer and extends further forward than the anal fin. In the shortfin species, the dorsal and anal fins are of a similar length.
Longfin eels can be identified because the dorsal fin is longer and extends further forward than the anal fin. In the shortfin species, the dorsal and anal fins are of a similar length.