334 



60 



THOROLF LINDSTROM AND NILS-ARVID NILSSON 



C. pidschian 



01 U Q. UJ < -I Q. 



a )- o o 



Fig. 7. — In Uddjaur-Storavan C. peled is a fast-growing insect-feeder, C. lavaretus a dwarfed 

 plankton-feeder and C. pidschian a medium-sized bottom-feeder. C. peled has in both lakes 

 an obvious tendency to feed on surface organisms such as emerging and flying insects and 

 ceratopogonid-larvae. 



