Mr Dyson said the lakes were rested for three months prior to opening day, and first light was "magical fishing" because the lakes had been undisturbed.
An opening ceremony was held on Saturday night at The Landing, Lake Tarawera.
Mr Dyson said there was a pipe band and hundreds of people turned out, with a lot of boats taking to the water.
He said it was a time-honoured tradition and that a lot of people slept on their boats overnight so they did not have to mess about and were right there for the start of the season.
Mr Dyson said he had heard there was a buzz around the ramps and talk of the Fish for Gold promotion at the ceremony.
"It's just injecting that little bit of excitement into the fishing."
He wanted to remind those fishing of the standard boating advice.
He said to check the weather before you head out and always wear life jackets.
"Safety is paramount. Have an enjoyable time catching fish but stay safe."
Eastern Fish and Game regional manager Andy Garrick said a remarkably good number of people had turned out on the lakes for opening day.
He said they were waiting to hear more about how Lake Okataina had been, but Lake Tarawera and Lake Rotoiti had great numbers of fish caught, with few people they had encountered not catching anything.
Mr Garrick said there had been nothing exceptional size-wise yet but the condition of fish was generally good.
"I think there's a tradition and excitement about opening day."
He said no pink tags for Fish for Gold promotion had been found yet.
Local Steve Gatenby, who went fishing at Lake Tarawera, said conditions were good for opening morning.
"It was beautiful and calm with lots of boats out there this morning.
"We saw lots of boats catching fish around us and the fish we got were in great condition."
They landed six fish this morning and kept one.
He said he enjoyed being out there with the family and that it was serene.
Mr Gatenby said the season's opening ceremony was a nice tradition to catch up with people you had not seen in a while and had a great atmosphere - "everyone is hyped up for the opening day".