Malopterurus electricus

The electric cat- or sheath-fishes (Malopturus) are externally at once recognized by the absence of a rayed forsal fin, of which only a rudiment remains as a small interneural spine concealed below the skin. The entire fsh is covered with soft, villose skin, an osseous defensive armour having become unnecessary in consequence of the development of a powerful electric apparatus, the strength of which, however , is exceeded by that of the electric eel and the large species of Torpedo.
Source: 1911 EB, Vol. 5, Page 514

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