28 IKDIAN FRESH- WATER FISHES. 



shape, and usually inhabit salt water, the European 

 Sting fishes are armed with poisonous spines. The 

 Indian Sillago is much esteemed for eating. 



Scicenidce. 



This family has several representatives, generally 

 of a large size, in the Indian seas, belonging to the 

 genera, Scieena, Collichthys, Corvina, etc. Some 

 species, such as the Maigre, have the power of pro- 

 ducing a drumming or grunting sound beneath the 

 surface of the water. 



Polynemidce. 



The delicious Mangoe fish, Polynemus paradiseus, 

 and P. indicus, are good examples of this family. 

 The former has seven, and the latter five filiform 

 appendages below the pectoral fin. 



Scombridce. The Mackerel family. 



Are well known on account of their importance as 

 an article of food. They are marine fishes. The 

 family includes the common Mackerel, the Tunny, the 

 Albacore, the Bonito, the Pilot-fish, the Eemora or 

 Sucking-fish, the John Dory, and the Coryphene, or 

 dolphin of sailors. 



Carangidce. 



Are deep narrow fish, represented in Indian seas by 

 the genus Caranx (containing the Cobbler-fish), 

 Equula, and others. 



Ziphiidce, or Swordfish. 



Are well known on account of their bony weapon, 



