Centrarchus macropterus 4 O01] 135 0.67 V0 
*Fundulus notti 4 SU 1a 0.67 eb 
*ELassoma zonatum 2 eOUG mea Oter 0.67 0.5 
Micropterus sakmordes 2 .006 0.7 0.33 0.2 
Pomoxds nignomaculatus 2 ',006 Os7 0.33 0.2 
Etheostoma gracile 1 003 0.4 0738 0.1 
*lLepomis punctatus 1 S003 fOR4 0.33 0.1 
Station 8 was a densely vegetated pond-margin habitat with a 
partial tree cover. Its area was approximately 7.0 square meters, 
its depth 3/4 meter deep. The oxygen readings for November-March 
ranged from 4.4 ppm to 10.8 ppm and averaged 8.3 ppm, and for 
April-October ranged from 5.2 ppm to 8.5 ppm and averaged 6.5 ppm. 
The water temperature for the winter was 6.3°C and for the summer 
was 21.5°C. The station had scattered duckweed, CeratophylLum 
demerxsum, and an abundance of Typha latifolia and Nekumbo lutea. 
Fourteen species of fishes were collected. 
Total No./m@ RD Catch Abund. 
Species No. Freq. Index 
*Fundulus notti 61 .989 35.5 0.78 277 
Lepomis macrochinrus | 4] Ps06 5 site 3 8 O98 18.6 
*Lepomis symmetricus 22 235 7aurl2s8 0.89 LIiv4 
Lepomis gulosuds 13 ee 1 7.6 O56 4.3 
Lepomis punctatus 9 . 146 Sue 0.44 Ae 
*ELassoma zonatum 10 ho? t5a8 0.33 1.9 
Aphredoderus sayanus 3 049 Nese? Ui bees 0.4 
Micropterus salmoides 3 .049 lect On22 0.4 
Esox amerrcanus 2 032 lend Ouzic O23 
Pomoxads annularis 2 032 la Orme O23 
Gambusia affinis 3 049 Lisel O35 ae 0.2 
Centrarchus macropterus 1 .016 0.6 0.11 Dik 
Etheostoma gracile 1 016 0.6 OF is 0.1 
Fundulus notatus 1 016 0.6 0.11 0.1 
Species Accqunts 
The following accounts discuss total and Illinois distributions 
of the fish species studied, preferred habitats, ecological re- 
quirements, abundance, present status, and list the new Illinois 
localities discovered in the course of this investigation. 
Fundukus notti (Agassiz).--The starhead topminnow ranges from 
southern Michigan west to Missouri and south to the Gulf Coast 
(Fig. 2): In Illinois, the subspecies, F..n. dispar, is spor- 
adically distributed in northeastern Illinois, the middle 
Illinois River valley, and certain swamps in Union County (Fig. 2). 
