"It would be wrong to punish law-abiding fishermen for what other violators did," Anne-Kristin Jorgensen said.
Ambassador Oyvind Nordsletten confirmed that quotas would not be revised.
"Traditionally, Russia and Norway divide the cod quota in half after other countries get their shares," he said. He also said that this year the Russian share would be a little smaller than last year - 492,000 tons worth some $1 billion.
The ambassador said Russia and Norway should maintain joint fishing control, otherwise cod could disappear, as had happened in Canada.
Jorgensen said the Russian-Norwegian fishery commission had decided to toughen fishing control at the 34th session in Kaliningrad, the Russian exclave on the Baltic Sea. The two countries agreed to use each other's coastguard vessels and cooperate with third countries.
The commission held its session in the wake of two incidents involving Russian fishing boats in the Barents Sea. The Elektron trawler, accused of violating Norwegian fishing regulations, was pursued by Norwegians for five days across the Barents Sea in mid-October. After that, Norwegian authorities detained two Russian vessels accused of unauthorized fish reloading in Norway's territorial waters. They were released October 28 after posting bail.