Prionotos Cory (Scleromystax)

The Prionotos Cory (Scleromystax), scientifically known as Scleromystax prionotos, belongs to the Catfish family group. Adults reach a maximum size of approximately 6 cm and have a fusiform body shape with a moderate growth rate. Classified as peaceful, this species primarily occupies the bottom zone of the aquarium and produces a low level of biological waste.

To thrive, the Prionotos Cory (Scleromystax) requires a freshwater only aquarium with a minimum volume of 90 litres and a tank length of at least 80 cm. Water temperature should be maintained between 18°C and 25°C, with a pH range of 6–8 and a general hardness of 2–20 dGH. A moderate water flow is preferred.

Due to its specialist needs, the Prionotos Cory (Scleromystax) is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 3 varieties: Standard / Unsexed, Male, and Female. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.

When setting up an aquarium for the Prionotos Cory (Scleromystax), a moderate water flow best suits their natural preferences. Because this species occupies the bottom zone, the aquarium layout should prioritise sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour, smooth gravel or rounded substrate to protect their sensitive barbels, and leaf litter or blackwater tannins to replicate their natural soft-water habitat.

Classified as peaceful, the Prionotos Cory (Scleromystax) is a schooling species that feels most secure in a sizeable group, where natural shoaling behaviour reduces stress and brings out their best colours. Selecting tankmates that favour different water layers from the bottom zone can help reduce competition and territorial overlap.

Prionotos Cory (Scleromystax) is best for a fishkeeper who wants a species that can settle into a calmer community setup and can provide a keeper who can commit to a proper group of at least 6. It makes the most sense for a hobbyist who will actually build around its needs, especially sand.

The most common mistake is treating Prionotos Cory (Scleromystax) like any other community fish and skipping the soft sand it needs to forage safely. Another frequent problem is underestimating its social needs. A token pair or trio often behaves very differently from a real group.