42 



New Yokk Stvpk 



TABLE OF RESISTANCE (After Wells) 



Indicating the relative resistance of the more common species of fishes to 

 be taken in the waters of Northern Illinois, together with data as to the best 

 type of ecological environment for each species. In column 2 the resistance 

 of the least resistant species is arbitrarily taken to be unity. 



Species of Fish 



Labidesthes siceulus 

 (Brooksilverside) ... . 



Etheostoma coeruleum 

 (Rainbow darter) 



Moxostoma aureolum 

 (Redhorse) 



Catostomus commersonii 

 (Common sucker) .... 



Notropis atherinoides 

 (Shiner) 



Semotilus atromaculatus 

 (Horned dace) ....... 



Chrosomus erythrogaster 

 (Red-bellied dace) 



Micropterus dolomieu 

 (Small-mouthed black bass). 



Micropterus salmoides 



(Large-mouthed black bass). 



Pimephales notatus 



(Blunt-nosed minnow) 



Hybopsis kentuckiensis 

 (River chub) 



Notropis cornutus 



(Common shiner) 



Pomoxis annularis 



(White crappie) 



Pomoxis sparoides 



(Black crappie, Calico bass) . . 



live re- 

 sistance 



2.3 



i<u it ZL 



3.0 



T" * 

 5.0 



5-0 



6,0 

 6.0 

 7.0 

 7.0 

 8.0 



8.0 



Best place to collect 



Small rivers and clear shallow lakes. 

 Prefers sandy bottom. 



Among the stones in the ripples of 

 creeks and small rivers, 



Sandy-bottomed pools in creeks and 

 small rivers, 



Pools in creeks and small rivers. Pre- 

 fers bottoms containing some sand. 



Common in lakes and rivers. 



The headwaters of small creeks. In 

 vegetation along bank. 



Small clear creeks. Along with 

 horned dace but does not go up 

 stream as far. Often in vegetation 

 along bank. 



Swift streams; clean bottom, 

 deep lakes; cold water. 



Small 



Sluggish rivers and small, shallow 

 lakes with mud bottom. 



Pools, mud bottom, in creeks and 

 small rivers. 



Creeks and small rivers. Swifter 

 parts of pools. 



Creeks and small rivers. Swifter 

 parts of pools. 



Wide distribution. Abundant in 

 ponds, lagoons, and all sluggish 

 water. 



Practically same location as for white 

 crappie. 



