The national minimum size of capture is 220 g, except in Lake Ellesmere where 140 g minimum size was instituted (Ref. 9072). Found all year round in North I.; seasonal in South I. where most hibernate during winter (Ref. 9258). Potentially being spread into areas that were naturally free of eels (Ref. 52336). Voucher specimen(s) held at the NMNZ. Also Ref. 4537, 45493.