FISH, THE PEOPLE OF THE SEA 



beak, and their teeth are like a solid mass of 

 round grains of marble, which they use for nib- 

 bling the coral rock on which it is thought they 

 may possibly feed to some extent. They live in 

 captivity under good conditions, but it is thought 

 that they cannot be at their best without coral, 

 for they are always delicate and never so bril- 



liant in an aquarium as they are in the sea. High 

 up in the order of oddness comes the cowfish and 

 sudeay; both are box fishes, the cowfish being a 

 little narrower than the sudeay, having also a 

 longer tail. Its chief difference, however, are the 

 two small horns in its narrow forehead. Seen 

 head on, both fish are nearly triangular and are 



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