170 College of Forestry 
Insecta.) giiydrophalidse: larvae.) joy-) vate l> ens) erekeneds 
Ephemeride larve (Canis)........... 
Chironomus and other Diptera (larve) 
Bryozoa. Plumatella. . FO e.s 01a BE 
Plants. Wolffia... 
80 per cent. 
10 per cent. 
| 5 per cent. 
The third example, young 51% inches long, had eaten chiefly 
of the bryozoan Plumatella, a few Caddis-flies, a small gas- 
tropod (Strepomatidse) and a few Chironomus larve. The 
average for three specimens is about: 
MOMS Caceres creer cheretenens ousas che Noreen eevee 22 per cent. 
Mnisecba,. 252 ce SOs ata. Beak. otha Bats 44 per cent. 
IBY YOZO Rs lasycpstaoe cys» ole = EO aie Cats wldeehe hele s eine 30 per eent. 
d 24h th d= 6) SPM cae eneeee an a aero ream ene cieacla Bint ora 3 per cent. 
Miscellaneoust sesh certs tie cts vise stares ore ae 1 per cent. 
Cyprinus carpio (Linnaeus). German Carp. 
The percentages of food for this introduced fish stand 
about as follows: 
Vegetable matter 
Animal matter 
66 per cent. 
34 per cent. 
Carp are omnivorous feeders, rooting up the mud of the 
bottom in search of small animals as well as of vegetable 
food. It also feeds upon water plants at and below the sur- 
face. Its animal food consists of insect larvee, crustaceans, 
mollusks and other small aquatic animals. The charge that 
this species seeks the spawn of other fishes for food has not 
been supported by evidence. The spawn that has been noted 
in its stomach is quite incidental. Cole (1905, pp. 569-572) 
dissected thirty-three specimens, twelve of which contained 
Mollusca in greater or less quantities, as noted below: 
1. Ghara, small shells, insects. 6. 
2. Vegetable matter, shells, in- te 
sects. 8. 
Broken shells, insect larve. 
Broken shells, caddis-fly larve. 
Alger, broken shells, larve. 
3. Chara, Crustacea, fragments of 9. Caddis-fly larve, broken shells, 
shells. alge. 
4. Chara, broken shells, small 10. Shell fragments, Entomostraca. 
bivalves. 11. Shell fragments, Entomostraca, 
5. Broken shells, Chara, amphi- insect larvee. 
pods, ete. 12. Shell fragments, Ostracods, ete. 
Exact percentages are not available, but the Mollusca are 
believed to form more than 15 per cent. of the food of this 
carp. 
| 
