Abstract
A female A. dieffenbachii caught off the New Zealand coast has ova of 0.45 mm to 0.50 mm in diameter; these ova are larger than those observed in seaward migrating females of this species. The estimated percentage of gonad weight to total body weight of 11.2% is significantly greater than that observed in migrating females of the same size, but other migratory features, such as the eye size, colour, head and pectoral fin shape, are identical.
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