Glowspot roaches, and the name involves a claim worth correcting.
They have prominent light-colored spots on the pronotum, and there has been a persistent story that these are bioluminescent, based on a single much-publicized claim about one species that has not held up under scrutiny. The spots are not producing light in the animals you can buy. They are markings, and they are attractive markings, but the name oversells them.
Beyond that: large, slow, docile Neotropical roaches, easy to culture, climbing so a barrier is required. If a listing is charging a premium on the strength of the glow claim, that premium is buying a myth.
The line on each tile: lowest ask per day.
Rarity BETA Rarity is supply, and only supply: the tier is how many sellers have ever carried a species, and for a single seller, how many separate listings. Price is not part of it, and neither is how recently it appeared. Tiers are given to tarantula species only.