54 



MARKETABLE 15RITTSH MARINE FISHES 



ventral are a number of small finlets. The scales arc small and 

 in the tunnies arc limited to certain regions on the breast, form- 



FiG, ig.^The Mackerel. 



ing a kind of corselet or breast-plate. They swim in shoals 

 near the surface. 



The angler or fishing frog (Fig. 20), sometimes called the 

 monk-fish, belongs to a curious family of fishes in which the tail 

 is much reduced, the mouth proportionately large, and the side 

 fins formed for walking on the bottom or holding on to sea-weed. 

 The angler lives on sandy or gravelly ground. The weevers are 



Fig. 20. — The Angler, Fishing Frog, or Monk-fish. 



fishes of no value as food, which have their eyes on the top of the 

 head and bury themselves in sand in an upright position. The 

 bull heads or hard heads and the gurnards are usually placed in 



