SOUTH JERSEY GUPPY GROUP

GUPPY ARCHIVES


Experiments with Guppy Foods

by Dr. E. C. & Associates

The following statistics are the results of an extensive series of test run by Drs. Larr, Johns and Tobins. To determine which kinds of foods would cause female guppies to drop the largest number of fry.

Each test group consisted of three pairs of adult guppies which were fed only the one kind of food- - and no others—during the 120 day test period. Each tank of test fish were fed three times a day: morning, noon and afternoon (4 pm.). The dry food tests consisted of alternate feedings of regular and flake food; the regular food being a 50/50 mix of two leading brands of dry food; the flake foods being a 50/50 mix of two leading brands of flake foods. (Since these tests were conducted. Another brand of dry food has been tested which fits between #5 and #6 for production of young.)

FOOD TEST NUMBER 6642 (LARR, JOHNS, ROBINS)


             FOOD             TOTAL YOUNG  MALES  FEMALES

 1: Earthworms, chopped               178    87      91 
 2: Earthworms, chopped frozen        164    81      83
 3: Beef heart                        143    64      79 
 4: Tubifex                           141    61      80 
 5: Brine Shrimp, Hatched             101    48      53
 6: Gordon’s Formula (Liver)           79    39      40
 7: Brine Shrimp, Adult Frozen         76    37      39 
 8: Dry Food, flake & regular          52    24      28
 9: Freeze-dry (brine shrimp & tubifex)40    23      17
10: Leaf lettuce                       37    21      17
11: Peas                               28    19       9
12: Farina                             18     9       9 
13: White worms                        16     7       9
14: Oat Meal                           12     5       7
15: Bran                                9     5       4 
16: Bread                               6     5       1

All low producing pairs were given earthworms at the end of the above test and all quickly gave results as in # 1

17: Earthworms and dry food            194    93    101
18: Earthworms, beef heart and lettuce 221   107    113

In the testing of beef heart it was found that feeding this material, even every other day, prolonged the guppy’s life from 25% to 50%.