"fish struggling" is grammatically correct and can be used in written English.
It is typically used to describe a specific fish or group of fish that are having difficulty swimming or surviving in their natural habitat. Example: The fish struggling in the polluted river were a sad sight to see.
A pamphlet was produced — which came to be known as the Fish Pamphlet (it had a picture of a fish struggling on a hook on the cover) — that was strongly Marxist in its analysis.
The boat trails streamers to attract the big predators -- by sound: the streamers make a noise like a fish struggling.
On good days, Chile is known for its high-tempo, high-pressing defense — a system that can make opposing players feel like fish struggling to swim upstream.
On its sign there was a picture of a fish struggling with a bobber and a hook, and the single word "Bait".
When she was talking about living in a basement, eating pasta and tuna fish, struggling to raise kids while her husband went to business school and law school (the fact that both were Harvard passed unmentioned), the speech felt forced, implausible and untrue to who the Romneys really are.
On its sign there was a picture of a fish struggling with a bobber and a hook, and the single word "Bait". From the muscle car, the bait shop, and a deadened air of resentment exuded by the kicking, kicking foot of the little boy left alone, I inferred that he was waiting for his father.
In one spot, the fish struggles for breath in a body of polluted water.
But seeing his look of pleasure as the fish struggles to life and disappears into the river, it becomes obvious that Taylor's husky 6-foot-1 stature belies an underlying tenderness.
While the town's fish struggle to clear up the mess, the fish leader swims up to the surface of the river to find out where the banana peel is coming from.
That's why they don't think about eating something non-eatable". Water splashes through the metallic mesh as caught fish struggle.
And the fish kept struggling, jumping against her leg.
