Red Edge Blonde Isopods (Cubaris sp.)

Two of the shops that sell this animal describe it differently in the one respect that would settle what it is. A British breeder gives it a white body with peachy highlights and, critically, black eyes. A Dutch seller lists the same trade name as a synonym for 'Red Edge Albino' and gives it red eyes. Those are not two descriptions of one animal. Eye colour is how the trade separates these. It is a trade heuristic and no isopod paper supports it - isopod eyes are screened by ommochromes, not melanin, so the vocabulary borrowed from snake keeping does not transfer cleanly. Picking a side on the page that sells the animal would be convenient, so we will not. What we can tell you: ours are cream to white with a soft peach margin, they run about 15 to 18mm settled, and where our stock has been photographed the eyes are dark. Our older copy called them a leucistic or hypomelanistic variant, distinguished from true albinos by dark eyes instead of red. That is the same trade heuristic, dressed in vertebrate vocabulary that does not apply here.

Where 'Blonde' comes from

It is not a category. In the Cubaris trade 'Blonde' is a modifier meaning the pale version of something - there is a Blonde Ducky, a Rubber Ducky Blonde, an Ultra Blonde. It carries no information about relatedness, and it does not mean this animal is closely tied to any other Blonde on the market. The animal underneath the modifier is Cubaris sp. 'Red Edge', which is genuinely well established in the trade even though no part of it has ever been formally described. The red lateral skirt is the one feature every seller agrees on. Body colour is not. One seller calls it blue-grey, another greyish-brown, a third purple, a fourth violet-black - all for what is supposedly a single animal.

None of these animals has been formally described. There is no type specimen, no scientific name beyond Cubaris sp., and no collection locality. Cubaris itself is an acknowledged dumping ground with over a hundred described species and a standing recommendation for revision, and a few hobby animals filed under it have eventually proved not to be Cubaris at all.

One more thing worth your attention. A large American seller lists Red Edge, Red Edge Orange Phase and Red Edge White Phase as three separate products carrying byte-identical data - same country, same 18mm, same reproduction rate - separated by a colour word and a threefold difference in price. We are in no position to be superior about that, since we list four Red Edge products ourselves. The difference we try to hold to is saying which is a colour we selected and which is a described animal, and none of ours claims to be a species.

Conditions

We hold ours at 22 to 26°C. Humidity is where the published guidance falls apart completely - across the sellers we checked it spans 55% to 85%, which tells you those are guesses rather than findings. We run a gradient: one end wet enough that the moss stays springy, the other dry enough to sit on, and we let the animals choose. Cross-ventilate through mesh set on opposing sides. Still, damp air is what we most often see kill a tub of these.

Substrate 6 to 8cm with rotten hardwood mixed through it, deep leaf litter, cork bark laid flat, sphagnum in one corner. Permanent calcium, and protein occasionally.

Broods are small. A starter group here will not have become a full tub by month six. Whether it counts as easy or intermediate depends who you ask, and the trade splits about evenly, so we will say it is undemanding day to day and unhurried about multiplying.

Every order is covered for live arrival. Animals go out Tuesday to Thursday most weeks, occasionally Monday, using next-day post, bedded on moist moss in a punched pot and packed into doubled corrugated card. You get 20% over the number you paid for.