Yolk Sac provides good observational information about feeding behavior of the LCS. A few reports that have studied the LCS noted that they did not noticeably make the water turbid as koi, carp, and bullheads tend to do. Natural food items are things found in the sediments such invertebrates (insect larvae and worms), small crustaceans and some organic materials. Some filamentous algae has been found in their stomach contents, but the algae may have been eaten together with the bugs tangled in the algae.
LCS and LMbass.
http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1021&context=nebgamepubs
