"very few fish" is correct and usable in written English.
You can use it to express a lack of a great number of something. For example, "This pond has very few fish, so it isn't good for fishing."
"There are very few fish in the Great South Bay in general except at the inlets, and the sea grasses vanished from the eastern Great South Bay when we first moved here 25 years ago".
As is commonly the case with severe bleaching, the rest of the ecosystem appeared to be suffering too, with Roach reporting that she saw very few fish, and those that she did see were mostly herbivores, which would be feeding on the algae beginning to grow over dead coral.
This means that very few fish are reaching quality breeding grounds, which has likely contributed to the decimation in river herring populations.
Very few fish, among them whale sharks, have been shown to dive this deep, and the all-time record (2,992m) is currently held by a mammal: the beaked whale.
There were very few fish in the pools, a cold and howling upstream wind, and a surly Finnish TV crew sharing our beat: run-of-the-mill for salmon fishing.
While the divers discovered healthy corals near Easter Island, they found very few fish; Enric Sala, Explorer in Residence of National Geographic and co-leader of the expedition, compared it to "a perfect house that no one lives in".
The opinion was condemned by environmental groups, from the Sierra Club to a regional group, Save Our Wild Salmon, as doing more for the Bonneville Power Administration than for the 13 troubled fish runs, two of which have very few wild fish left to reproduce outside hatcheries.
For despite nearly a thousand miles of coastline, Long Island has very few good fish houses, especially modestly priced ones.
"We found a thriving population of wild brown trout -- a tremendous number of young ones from four to six inches, and very few stocked fish," he said.
The retail branch of Wild Edibles in Grand Central Market carries them for $21 to $25 a pound, but very few other fish shops do, although some will take special orders.
Data are still being processed, but it appears that the most damaging seaweeds are consumed by only a very few species of fish, suggesting that limiting the harvest of these particular fishes might be helpful in preventing seaweed replacement of corals on tropical reefs.
