A fish (Capros aper, Zeus aper) akin to the Mackerel; so called from the shape of its snout, which is turned up.

1

1836.  Penny Cycl., VI. 274/2. The boar-fish … may be distinguished by its mouth being more attenuated and protractile.

2

1861.  Blight, Week Land’s End, 130. Off the Runnel Stone, the boar fish, Zeus Aper, though an exceedingly rare British fish, is abundant.

3