ZOOLOGICAL SOCIETY BULLETIN 



The Cowfish (Ostracion 

 tricornis) is merely another 

 kind of trunkfish, with a 

 pair of forward projecting 

 spines above the eyes, sug- 

 gestive of horns. Specimens 

 in the Aquarium have exhib- 

 ited four different phases of 

 color and markings. It has 

 the habit in captivity of pro 

 jecting its small, sucker-like 

 mouth above the surface and 

 squirting water a few inches 

 into the air. Specimens have 

 lived in the Aquarium two 

 years. 



The Trunkfish (Lacto- 

 phrijs triqueter) might be 

 called a tortoise of the sea, 

 as it is similarly encased in 

 a hard shell. The fins in 

 all trunk fishes project 

 through holes in the shell 

 and have a rotary or sculling 

 motion. The trunkfish will 

 live two or three hours out 

 of water. It is a good food 

 fish, but is not often seen in 

 tropical markets. It thrives 

 well in captivity. 



The Rudd or Pearl Roach 

 ( Scardinius rri/throphthal- 

 mus) is one of the old reli- 

 ables among the fresh-water 

 fishes in the Aquarium, 

 where specimens have lived 

 over ten years. This fish 

 was introduced from Eu- 

 rope and is abundant in 

 lakes in the parks of New 

 York City, but the history 

 of its importation is un- 

 known. It is considered a 

 food fish in Europe and 

 reaches a weight of two 

 pounds. 



SPECIMEN ILLUSTRATIONS AND DESCRIPTIONS FROM THE AQl'ARILM GLIDE BOOK NOW IN I'RKSS 



