The South Australian opposition is calling for new health advice to be issued following the discovery of the culprit behind the state's toxic algal bloom, but authorities say there is no need for a change ahead of summer.

The newly identified algal species, karenia cristata, can lead to respiratory problems such as shortness of breath and asthma.

But despite the discovery, state health experts won't change their advice about the bloom.

"The health advice is actually based on brevetoxins so I guess the missing piece here is identifying which particular karenia species was producing that toxin," Dr Chris Lease from SA Health said.

However, the opposition has urged SA Health to review its position.

"In this paper, it talks about inhalation of brevetoxins causing serious health effects, i

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