Test results from current fish stocks (Table 1) show that the "Tinker Mackerel" is a viable replacement for herring and the stable supply provides for a much lower cost.

Caught in Southern California, "Tinker" is the nickname for small Pacific Mackerel with a weight of 100 grams. The low fat content keeps filtration systems from getting fouled with oily residues while at the same time providing a high level of protein and calories in comparison to the herring and sardines. The small "Tinker" also has a low level of ash for better digestibility.

Table 1

Test Description	Herring	Sardine	Mackerel
Fat	5.49	10.55	3.79
Moisture	72.71	67.71	73.02
Protein	18.2	20.15	21.08
Ash	2.42	2.03	1.81
Carbohydrates	1.18	0	0.3
Calories per 100g	127	176	181

Herring:	Pacific Herring SIZE: 5-7 Inches
Sardine:	Pacific Sardine (Sardinops sagax) SIZE: 80-100 grams each fish
Mackerel:	Pacific Tinker Mackerel (Scomber japonicus) SIZE: 90-110 grams each fish