Here’s another new product we’re adding to our list of knives to buy: the Petrified Fish Guppy, a compact button lock folder that looks built around actually staying in your pocket.
🐟 Petrified Fish PFE19 Guppy
Price: $76
Where to Buy: Amazon
Most everyday carry knives stop being everyday carry the moment you notice them too often. The problem usually isn’t blade steel, lock type, or brand loyalty. It’s weight, pocket bulk, and whether the knife still feels useful after the new-gear excitement wears off.
The Petrified Fish Guppy attacks that problem from the small side. It’s a 7.05 inch folding knife with a 2.95 inch N690 blade, a button lock, ceramic ball bearings, and a listed G10 weight of 2.54 oz. That puts it in the useful middle ground between keychain novelty and the kind of full-size folder that starts dragging down your pocket.
Why the Guppy Shape Works for EDC
The Petrified Fish Guppy name sounds playful, but the layout is practical. Petrified Fish gives it a modified drop-point blade with a 2.3mm thickness, which keeps the edge geometry focused on slicing instead of overbuilt survival-knife theater.
That matters for the jobs most pocket knives actually do. Opening packages, trimming cord, breaking down cardboard, scoring tape, and quick food prep all reward a thin blade more than a thick one. The Guppy isn’t trying to look tactical first. It’s trying to be the knife you don’t mind reaching for ten times a day.
The Blade Steel Is the Upgrade Hook
N690 is the headline material here. Petrified Fish lists the Guppy with Bohler N690 stainless steel, a 59 to 61 HRC hardness range, a flat grind, and either satin or black stonewashed finishes depending on the version.
For a $76 knife, that steel choice gives the Guppy a stronger spec story than a lot of low-cost EDC folders built around D2 or softer budget stainless. N690 is commonly chosen for corrosion resistance, edge retention, and easier upkeep in humid or outdoor use. Petrified Fish’s own positioning leans into that balance, so the safer read is simple: this is meant to be a lightweight carry knife, not a display piece.
The Button Lock Keeps It Simple
Button locks are popular because they make one-handed closing easier without putting your fingers in the blade path. The Guppy pairs that lock with a ceramic ball-bearing pivot, which Petrified Fish says supports fast deployment.
That combination fits the knife’s size. A compact folder only works if it opens cleanly, closes without drama, and doesn’t ask you to fight the mechanism every time you use it. The Guppy also includes a pocket clip, so the carry setup matches the lightweight design instead of treating pocketability as an afterthought.
The Hidden Liner Is the Smartest Detail
The spec that does the most quiet work is the hidden internal liner. Petrified Fish says the support liner runs through roughly a quarter of the handle’s length, which helps trim weight without removing the support the knife still needs.
That design choice explains why the different handle versions stay so light. The G10 version is listed at 72g, or 2.54 oz. The Ultem version drops to 62g, or 2.19 oz. The carbon fiber version lands at 66g, or 2.33 oz. If you’re trying to build an EDC kit that doesn’t feel like a pocket full of hardware, those numbers matter.
Which Version Makes the Most Sense
The Amazon listing Reah provided points to the purple G10 version with a satin blade. That version is the safe pick if you want grip texture, visible color, and the standard 2.54 oz carry weight.
🐟 Petrified Fish PFE19 Guppy
Price: $76
Where to Buy: Amazon
Petrified Fish also lists red G10 with a black stonewashed blade, Ultem with a satin blade, and black twill carbon fiber with a black stonewashed blade. The Ultem version is the lightest. The carbon fiber version is the dressier pocket option. G10 is still the most straightforward choice if you expect wet hands, outdoor use, or general daily abuse.
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