108 College of Forestry 
A study of the table indicates that of the Lake types the 
sulrush-Water Willow type of habitat produces the greatest 
number of species (39) including those mollusks (18 species) 
known to be of value as food for fish. Other types, as the 
Boulder type with 16 species and the Arrowhead-Pickerel- 
weed type with 17 species are noteworthy. Emphasis 
should be made of the Submerged Vegetation type, in which 
there are 13 species, because this is probably one of the best 
locations for mollusk-eating fish, containing as it does such 
mollusks (9 species) as Bythinia, Amnicola, Valvata and 
Physa, all of which are eaten by fish. Of the Creek types, 
the habitat with rocky bottom and rapid water contains a 
varied insect and crustacean fauna which is doubtless of value 
as food to the fish living in this kind of an environment. 
The single mollusk observed, Ancylus, is not yet known to be 
of food value. In the other types, creek, river and pond, 
sufficient data is not yet available for comparison. 
D. BREEDING GROUNDS FOR FISH. 
Available and suitable grounds for breeding purposes are 
plentiful in Oneida Lake. A large number of fishes breed 
in shallow water (1 to 3 feet deep), and those building nests, 
as the Dogfish, Black Bass, Crappie, Sunfish and Bluegill, 
require a gravelly or debris-covered bottom, with more or ‘less 
vegetation, as Bulrush, Pond-weed, or Sedge. These con- 
ditions are admir ably met in Oneida Lake, ‘where there are 
large areas of shallow water with suitable bottom and vegeta- 
tion. The area available for this purpose probably exceeds 
3,000 acres or 4.7 square miles. Those species seeking 
marshy or swampy places with much vegetation, as the Carp, 
Chub-sucker and Common Bullhead, find such habitats along 
the shores of Big Bay. It is an interesting coincidence that 
the maximum breeding period of fish, in April and May, is 
also the period of greatest development of Hntomostraca, 
upon which the young fish feed. This is a good example of 
the interrelation of organisms. 
