Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
mad fish
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "mad fish" is correct and usable in written English.
It can be used to describe a fish that is behaving erratically or in a frenzied manner, often in a metaphorical sense to convey excitement or chaos. Example: "The mad fish darted around the tank, creating a spectacle for all the onlookers."
✓ Grammatically correct
News & Media
Science
Alternative expressions(6)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
3 human-written examples
Helping out in the kitchen this season is Keith Rennie, who once cooked at Pisces and at Mad Fish, also in Manhattan.
News & Media
Every label from those with depictions of stately faux chateaux to the goofy bears, naughty crocodiles, 48-pound roosters, and mad fish, is seemingly shrieking at top volume, trying to tell its story.
News & Media
Scheduled for a mid-December opening, the new venture will feature a "half meat, half seafood" restaurant with many pictures of the old Max's crowd, said Chris Smith, who is also a partner in Mad Fish, an Upper West Side restaurant.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
After deparaffinization, tissue sections were treated with a commercial FFPE tissue section kit (MAD-FISH-PKII, Master Diagnostica, Granada, Spain) following the manufacturer's instructions.
Posthybridization washes were performed using a posthybridization solution (MAD-FISH-PKII, Master Diagnostica, Granada, Spain) for 2 minutes at 72°C and then, the slides were counterstained with 7 μL of 4, 6-diamino-2-phenylindole (DAPI II, Vysis, Downers Grove, IL).
Other times I look up at the lead boats towering above me – the Christina S and the Indianna are especially impressive, particularly when the Out camp moors them to the side of HMS Belfast, and it legitimately looks like the perma-docked war ship is really, really mad about fish – and think: fucking hell, they really are making a point.
News & Media
He's not mad at the fish, per se; he's just disappointed that the fish tale you'll be forced to share at dinnertime won't have much bite to it.
News & Media
The aforementioned programmer at an HFT firm is a quant, as is this builder of self-learning algorithms who believes he'll end up "mad as a fish".
News & Media
Eurovision ground down a tiny notch back to relative sanity last night, which is only to say it was still as sweetly mad as a fish in a sporran.
News & Media
He could have shrieked, "You, too?" But it's hard to get mad at a plastic fish.
News & Media
And although he did relatively little science fiction after "Body Snatchers," he did star in the horror comedy "Piranha" (1978) as a mad scientist breeding killer fish.
News & Media
Expert writing Tips
Best practice
Use "mad fish" to describe fish that are behaving in an excited or chaotic manner, especially when emphasizing a sense of frenzy or uncontrolled energy. It's often used metaphorically.
Common error
Avoid using "mad fish" in contexts where a literal description of an angry fish is intended. The phrase typically implies a more metaphorical sense of frenzy or excitement rather than actual anger.
Source & Trust
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "mad fish" primarily functions as a descriptive term, where "mad" modifies the noun "fish". As Ludwig AI confirms, it's usable in written English, typically describing erratic or frenzied behavior.
Frequent in
News & Media
60%
Science
30%
Formal & Business
10%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "mad fish" is a grammatically sound, though relatively rare, expression used to describe fish behaving erratically or in a frenzied manner. As Ludwig AI indicates, the phrase is usable in written English. While it can appear in various contexts, it is most frequently encountered in News & Media, where it often evokes a vivid image of chaotic or excited movement. Alternative phrases like "crazy fish" or "frenzied fish" can be used to convey similar meanings. When using "mad fish", ensure the context aligns with its intended metaphorical sense of frenzy or excitement, avoiding literal interpretations of anger.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
crazy fish
Replaces "mad" with "crazy", conveying a similar sense of erratic or unusual behavior.
frenzied fish
Uses "frenzied" to emphasize a state of agitation or excitement in the fish's behavior.
wild fish
Substitutes "mad" with "wild", suggesting untamed or unrestrained behavior.
agitated fish
Replaces "mad" with "agitated", focusing on the fish's distressed or disturbed state.
unhinged fish
Implies a loss of control or reason, making the fish seem unpredictable.
berserk fish
Conveys a sense of violent or destructive behavior in the fish.
insane fish
Replaces "mad" with "insane", suggesting a severe mental derangement.
deranged fish
Uses "deranged" to imply a state of mental disarray or disorder.
lunatic fish
Substitutes "mad" with "lunatic", suggesting a state of madness or folly.
maniacal fish
Conveys a sense of wild, excessive enthusiasm or energy in the fish's actions.
FAQs
What does "mad fish" mean?
The phrase "mad fish" typically refers to fish behaving erratically or in a frenzied manner. It often conveys a sense of excitement or chaos.
What can I say instead of "mad fish"?
You can use alternatives like "crazy fish", "frenzied fish", or "wild fish" depending on the specific nuance you wish to convey.
Is "mad fish" a common expression?
While grammatically correct, "mad fish" is not a particularly common expression. Its usage is considered relatively rare compared to other similar phrases.
How can I use "mad fish" in a sentence?
You might say, "The aquarium was filled with mad fish darting around, creating a vibrant and chaotic scene." This illustrates the fish's excited and uncontrolled behavior.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested