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CHAPTER 2OOMX: 
EEE SOU ININW 
THE tunny and the mackerel are both members of the same 
family, the Scomberoides. The tunny is larger and rounder than 
the mackerel, indeed it is larger than the cod, as generally it 
is between 100 and 200 lbs. in weight. It is common in the 
THE TUNNY. 
(Scomber thynnus. 
Mediterranean. Its back is a deep blue, the rest of its body 
being a silvery white. Its dorsal rays are a golden colour, and 
its anal fins have six or eight iridescent zig-zags. The spinous 
rays of the fins are strong, and denote great swimming power. 
The large dorsal fin is armed with a strong spine, which can be 
used as a weapon of defence in case of need. As the drawing 
represents, the fish is provided with.a range of little fins, which 
connect the dorsal and anal fins with the tail. Thus the system 
of natatory organs is very complete, and at the same time sym- 
metrical. 
Like the other members of their family, the tunnies have 
the habit of leaping out of the water, seeming to swim with rapid 
bounds. When a number of them are together in a shoal, they 
follow the example of the wild duck, and advance in a triangular 
