FOOD OF BULLHEADS 31 



2. Lake Madison, Lake County, a few miles southeast of Madison, 

 is smaller than Lake Andes. There is no outlet, and the water is 

 only semifresh, due to partial stagnation, not salinity. The bottom 

 is muddy. The plants growing here were Ruppia and rushes. 

 Bullheads were found to be fairly common. 



3. Lake Poinsett, Hamlin County, is a large, deep lake, 8 or 10 

 miles south of Castlewood. Bullheads, very common here, were 

 caught with hook and line in water 6 to 12 feet deep. The bottom is 

 sandy, and the water is semifresh. Ruppia, Potamogeton pectinatus, 

 Potamogeton interior Ryd., and Spirogyra were abundant. 



4. Lake Kampeska, Codington County, a large lake west of Water- 

 town, has a sandy and pebbly bottom and a rocky shore line. Bull- 

 heads were not common, though one was taken with hook and line 

 at the outlet. Algae, rushes, and Potamogeton interior Ryd. made up 

 the plant life here. 



5. Cottonwood Lake, Spink County, 10 miles southwest of Red- 

 field, supported very little vegetation in 1926, which may have been 

 due to the abundance of carp. Algse, rushes, and Potamogeton 

 interior Ryd. were present in small quantities. The fish w^ere small 

 and apparently hungry. They took large pieces of minnow and 

 crayfish from the hook. 



6. Lake Byron, Beadle County, is a shallow lake 16 miles northeast 

 of Huron. Very few fish were in this lake, many having smothered 

 the previous winter. The bottom, where small amounts of vege- 

 tation exist, is pebbly and muddy. Fish were seined here, and no- 

 where was the water more than 4 3^ feet deep, and some of the fish 

 were taken in 1 foot of water. Bullheads were not common, and 

 those taken were very small. 



7. Sand Lake, Brown County, 20 miles northeast of Aberdeen, is a 

 fresh-water lake formed by the James River. Bullheads have been 

 removed by commercial fishermen and are not at present abundant in 

 this lake. The water is shallow and the bottom is muddy. Pota- 

 mogeton interior Ryd. is the most common plant. 



8. Clear Lake, Marshall County, a few miles east of Lake City, is 

 one of the few lakes having wooded shores. There is plenty of 

 vegetation for, the support of insect life. Ruppia and Potamogeton 

 interior Ryd. are the most important in the diet of the bullhead. The 

 hook and line were used in taldng bullheads, which were common 

 in this lake. The water is semifresh. 



9. North Red Iron Lake, Marshall County, is a short distance from 

 Clear Lake. The water is semifresh; the bottom pebbly and muddy. 

 Bullheads were fairly common. Only very small ones were taken, 

 the minnow net being used for the purpose. 



10. Lake Tetonkaha, Brookings County, 5 miles west of Bruce, 

 has a very irregular shore line. This lake was lacking in vegetation. 

 Bullheads were very common and were easily caught with the hook 

 and line. Crayfish were used as bait. The water is semifresh; 

 the bottom pebbly and muddy. 



11. Lake Oakwood, Brookings County, a short distance east of 

 Lake Tetonkaha, contains great numbers of bullheads. The water 

 is semifresh, the bottom is pebbly and muddy. As at Lake Teton- 

 kaha there is no great quantity of vegetation, Ruppia being that most 

 often eaten by the bullheads. 



