After a brief delay, New Hampshire Fish and Game department trucks have been heading out to stock the state's lakes and ponds with trout. Saturday is opening day for the state's designated trout ponds. Fish stocking generally occurs from mid-March to early July, but it didn't start until the last days of March this year because spring conditions were slow to arrive. Inland Fisheries Chief Jason Smith says with cold, high waters from melting snow, it will be a few weeks before rivers and streams are at "fishable'' levels. Many trout species are reluctant to bite until the streams reach temperatures in the mid-40s.