S. BUREAU OF FISHERIES. 
30 Ui 
14. SttveRsmpE Minnow (Leuciscus hydrophloz). 
This little fish is too small to be of much use for other than food 
or bait for trout, attaining a length of only 3 to 5 inches. It occurs 
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Fic. 14.—Silverside minnow 
in some of the sources of the Snake River in the park, particularly 
Heart Lake and Witch Creek. It spawns in spring. 
15. Lonanost Dace (Rhinichthys dulcis). 
This little minnow, attaining a maximum length of only about 
It is found in Heart 
5 inches, is food for trout and useful as bait. 
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Fig. 15.—Longnose dace. 
Lake and Witch Creek and also in Gardiner River below Osprey, 
Undine, and Rustic Falls. 
16. Dusky Dace (Agosia nubila). 
The little dusky dace, seldom over 34 inches in length, is extremely 
abundant and widely distributed in the Columbia River Basin. 
- Fic. Hae dace. 
the park it has been recorded from Heart Lake and Witch Creek. 
It is useful as food for larger fishes and as bait for trout. 
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