REPORT UPON THE FISHES OF IOWA. 
237 
VI.— CLEAR LAKE. 
Clear Lake is situated near the source of the Cedar and Iowa rivers, its outlet 
being a tributary of the Shellrock Biver. Its greatest length is about miles and its 
greatest width about 2 miles. Its longest diameter is east and west. The lake is 
quite shallow, not exceeding 20 feet in depth, while the greater part of it is less than 
10 or 12 feet deep. Portions of the lake contain considerable vegetation. At the 
time of our visit the water was about 4 feet lower than usual, and no water was flow 
ing in or out. The inlets are very small streams and the water in the lake was below 
the level of their sources. The chief game fishes are both species of the black bass, 
the wall-eyed pike, perch, and the pickerel. We collected at different points near the 
shore. 
THE FISHES OF CLEAR LAKE. 
1. Notemigonus chrysoleucus (Mitchill). Roach; Golden shiner; Bream. Rare. 
2. Fundulus zebrinus Jordan and Gilbert. Rare. 
3. Labidesth.es sicculus Cope. Brook silverside. Common. 
4. Lucius lucius ^Linnaeus). Pickerel. 
5. Poxomis sparoides (Lacepbde). Calico bass; Grass bass; Strawberry bass. Not abundant; said 
to be taken frequently by anglers. 
6. Ambloplites rupestris (Rafinesque). Rock bass; Red-eye; Goggle-eye. About as common as the 
preceding. 
7. Lepomis pallidus (Mitchill). Blue sunfish. Not common. 
8. Ameiurus melas (Rafinesque). Bullhead. Not abundant. 
9. Pimephales notatus (Rafinesque). Blunt-nosed minnow. Abundant. 
10. Notropis hudsonius (De Witt Clinton). Spawn-eater. Abundant. Snout blunt; month mod- 
erate and slightly oblique ; back arched; dorsal over ventrals and nearer snout than base of 
caudal; eye large, its diameter three in the head and nearly twice the length of the snout; 
15 to 17 scales before dorsal fin ; head, 4^ in length of body; depth, 4 to 41 ; scales, 38 to 40; 
teeth, 2, 4-4, 2, or 2, 4-4, 1, hooked at tips with grinding surface. This species is found in 
large numbers in Clear Lake, Spirit Lake, and the Okobojis, and is the minnow used as bait 
by the anglers. I have taken it in the Big Sioux River at Sioux City, but not elsewhere 
than in the localities above mentioned. 
11. Micropterus dolomieu Lacdpbde. Small-moutlied black bass. This species and the next are fre- 
quently taken by anglers. We caught many . young specimens in our small nets. 
12. Micropterus salnioides (Lacepede). Big-mouthed black bass. About as abundant as the preced- 
ing. Specimens taken by us were small and came from the shallow and warmer water. 
13. Btheostoma nigrum Rafinesque. Johnny darter. Abundant. 
14. Etheostoma flabellare Rafinesque. Rare. 
15. Perea flavescens (Mitchill). Yellow perch. Abundant. 
16. Stizostedion vitreum (Mitchill). “ Pike.” Said to be common. A few were caught by a fisher- 
man the day of our visit. 
