86 THE EDIBLE FISHES OF NEW SOUTH WALES. 
wherein I stated that this species possesses considerable 
value, being of good flavor and consistency, and that only 
a better knowledge of its good qualities is needed to ensure 
its consumption, as food, on a very much larger scale than 
at present, the supply—both present and prospective— 
being practically without limit. In its capture the proper 
gear would be, as in most other rock-dwellers, the trammel- 
net. It is seldom taken by hook and line, the principal 
reason being that it subsists chiefly upon the gelatinous 
seaweeds obtained in rocky situations. 
The Herring Kale furnishes a fine type of species in 
which secondary sexual characters are displayed. The males 
are of a uniform bluish-black, with a bright blue, or bluish- 
green, band near the outer margin of each caudal lobe and 
on each pectoral fin; the form of the body also is more 
elongate than that of the female, while the lobes of the caudal 
fin are more produced, sometimes greatly so. In the female 
the head and body are beautifully mottled with brown, 
orange-gold, and blue, while on the sides of the head are 
orange and bluish vermiculated bands. Viewed in an 
aquarium the female is seen to be a strikingly beautiful object, 
and under the same circumstances, it may be pointed out, 
the male appears to be of a uniform French-grey color 
(excepting the colored bands on caudal and pectoral fins). 
THE YELLOWTAIL FAMILY. 
Yellowtail (Trachurus declivis). 
Exceedingly abundant along the coast of New South 
Wales, though not much used as food. Notwithstanding 
this, its flesh is very tasty. Most of those captured by the 
fishermen and brought to market are immature, and are used 
as bait by line fishermen in the capture of more highly-prized 
species. The largest usually seen on this coast would run 
to about 12 or 13 inches. 
This fish is sometimes known as “ Scad.” 
