Oreo Crumble Isopods: Hardy, Bioactive (& Not Very Crumbly)

Just like their namesake cookie, Oreo Crumble Isopods are much loved, milky white, and bursting with energy.

This time, with a fraction of the calories…

As the Dalmatian variety of the Porcellionides “Powder Crew,” they’re now sporting new black spots, but they’re still the same hardy bioactive cleaners they always were.

Find out how to use and care for these exciting and (visually) tasty isopods!

Oreo Crumble Isopods

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Oreo Crumble Isopod – Quick Facts

Oreo Crumble Isopods are a color morph from the ever-popular Porcellionides pruinosus species. 

They come from the same family as the Powder Blue and Powder Orange isopods, though visually, they’re a lot closer to the ‘Orange Cream’ variety, which has a mottled orange coloration.

Coming in around a centimeter long, they’re a solid medium-sized species.

As for activity, I wasn’t kidding when I said they’re full of energy.

These guys are fast!

It’s not just the way they sprint from leaf to leaf – even the way they whip their antennas back and forth gives me whiplash.

Oreo Crumble Isopods
Trying to take a photo of them has a similar whiplash effect, but it’s worth it!

That said, their energy is definitely a good thing if you’re looking for a strong bioactive cleanup crew.

(And one that reproduces as quickly as these ones do…).

👉 Convinced? Shop the Oreo Crumble Isopods.

How to Care for Oreo Crumble Isopods

Container & Habitat

Oreo Crumble Isopods aren’t all that big, so they don’t need much space individually. 

They do, however, spread like wildfire.

So I’d recommend going bigger than you think you need to get started and that you (mostly) seal these critters in. They’re quite the escape artists.  

  • Terrariums – We recommend at least a 3-gallon container for a standard 10-count of isopods. With a loose-fitting seal (e.g., a cork lid or tank lid loosely placed on top) and opening it semi-regularly for airflow and feeding.
  • Culture bins – A shoebox-size Tupperware box is always a good starting point. Adding a vent with a mesh cover is a good way to add some airflow without the risk. Alternatively, our isopod partners, RDI, don’t recommend ventilating culture bins and instead just open them up regularly. 

As to what to put in said containers: It’s worth noting that Oreo Crumble Isopods are mostly surface dwellers, so you don’t need a deep substrate for these (they don’t burrow). 

Oreo Crumble Isopods
They’re often out exploring whenever I take a look.

A substrate that contains plenty of bioactive and moisture-retentive materials is perfect (e.g., our Premium Terrarium Mix). That’ll do well for both culture bins and terrariums.

You’ll also want plenty of leaf litter and other bioactive decor elements like magnolia seed pods

Oreo Crumble Isopods
I’ve found they’ll spend a lot of their time hiding in the pods.

In a culture bin, I’d still recommend a patch of moist sphagnum moss to help them regulate their moisture levels. Though in a terrarium setup, these guys seem to be happiest in general tropical conditions anyway, so you don’t need anything extra.

Temperature and Humidity

Like all other Porcellionides pruinosus isopodsthe Oreo Crumbles are hardy and adaptable.

We wholeheartedly recommend them for a range of environments/terrarium setups, from tropical to temperate (and even semi-arid if done correctly).

That said, for best results, we recommend a temperature range of 70-85º Fahrenheit (21-29°C) and a high humidity rate.

Both are easily achievable in a warm, tropical terrarium.

It’s pretty hard to go wrong with these beginner isopods; unless your house is freezing or a furnace, they’ll probably be a-okay.

Feeding Oreo Crumble Isopods

Honestly, Porcellionides pruinosus ‘Oreo Crumble’ will eat just about anything besides cookies.

(Real food only, please).

They have a voracious appetite, and that’s what makes them such effective bioactive cleaners in terrariums.

Do you have vegetable scraps to spare? Because these guys will make short work of cucumbers, squash, carrots, etc.

Just don’t add too much at once, as you don’t want excess to mold over (and the wet vegetables will readily do that).

Oreo Crumble Isopods
Interestingly, they seem to love the actual seeds of the magnolia pod, too.

We also recommend regularly supplementing with a protein source.

These are a protein-hungry isopod species, and you’ll see them fight for position on a dried fish or algae disk.

👉 Our hand-made Isopod Superfood blend has everything they need in a convenient powder.


Porcellionides pruinosus is more of a set-and-forget species when it comes to colony growth. 

We’ve never had to do anything specific to encourage our Powder isopods, and we’ve successfully used them in a wide variety of terrarium setups. 

As long as they’re suitably well-fed, you’ll have no issues!

If anything, you can argue that they’re perfect for vivarium bioactive setups because pets can help control their numbers.

Your Turn

There’s not a whole lot of challenge here; these are among the easiest isopods to get started with.

But I’m always open to learning!

Do you have any unique tips you use in caring for your Oreo Crumble Isopods?

Let us know in the comments.

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