The Inhabitants of the Aquarium 141 



uniformly pale yellowish shade, free from 

 any markings, while the dorsal and pectoral 

 fins show irregular black spots. A distinct 

 black stripe runs between body and caudal 

 fin. 



The Common or White Sucker (Colostomies 

 teres), while it has not the bright color of 

 many other fishes, deserves a place in the 

 aquarium. The back varies from olive 

 brown to brownish gray, growing lighter to- 

 wards the sides, which are of a light slate 

 color. Below the lateral line the sides are of 

 a pale pink, as is also the belly. In spring 

 this color changes to a bright, rosy pink. 

 The almost round body tapers considerably 

 toward the caudal fin, which is deeply forked. 

 Under the influence of changing conditions 

 these fishes vary somewhat in both shape 

 and color. 



The Sucker gets its common name from 

 its habit of sucking in its food from the 

 bottom with more force than is usually the 

 custom of other fishes. It is a vegetarian 



