One of the smaller species of freshwater stingray, yet it still requires a massive aquarium with a vast floor footprint. They are bottom-dwelling predators that absolutely require a fine sand substrate to bury themselves; coarse gravel will cause fatal infections to their soft underbellies. They possess a venomous tail barb and demand extreme filtration due to their massive bioload.
Hystrix Stingray (Porcupine Ray) At a Glance
Hystrix Stingray (Porcupine Ray) Tank Requirements
Will Hystrix Stingray (Porcupine Ray) fit in your tank?
Care guides tell you what Hystrix Stingray (Porcupine Ray) needs, the next question is whether your tank can safely provide it. Test Hystrix Stingray (Porcupine Ray) against your tank size, maintenance needs, and the fish you already keep before you buy.
Useful setup supplies
We may earn from qualifying purchases
Hystrix Stingray (Porcupine Ray) Water Parameters
Water care products
We may earn from qualifying purchases
Hystrix Stingray (Porcupine Ray) Temperament & Compatibility
Hystrix Stingray (Porcupine Ray) Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard Adult
Fully grown adult stingray. Size represents Disc Width (DW). Requires an extremely large footprint tank; the depth of the tank is less important than the floor space. Minimum width of the tank must exceed the ray's disc width by at least 1.5x to allow turning.
Differs in 1 trait from base species
Also known as: Adult Ray, Breeder
Juvenile (Grow-out)
Often unethically marketed as 'Teacup Stingrays' in the pet trade at around 10cm disc width. They will rapidly outgrow standard aquariums. A 200L (55gal) tank is strictly a temporary grow-out enclosure for pups to ensure they are eating before moving to a pond or monster tank.
Differs in 5 traits from base species
Also known as: Teacup Ray, Baby Stingray, Pup
Hystrix Stingray (Porcupine Ray) Care Guide Summary
The Hystrix Stingray (Porcupine Ray), scientifically known as Potamotrygon hystrix, belongs to the Oddballs family group. Adults reach a maximum size of approximately 40 cm and have a depressed body shape with a moderate growth rate. Classified as semi-aggressive, this species primarily occupies the bottom zone of the aquarium and produces a extreme level of biological waste.
To thrive, the Hystrix Stingray (Porcupine Ray) requires a freshwater only aquarium with a minimum volume of 680 litres and a tank length of at least 180 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 6–7.5 and a general hardness of 1–10 dGH. A moderate water flow is preferred.
The Hystrix Stingray (Porcupine Ray) is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Standard Adult and Juvenile (Grow-out). 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.
Hystrix Stingray (Porcupine Ray) Habitat Setup
When setting up an aquarium for the Hystrix Stingray (Porcupine Ray), 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 and smooth gravel or rounded substrate to protect their sensitive barbels. Keepers should note that expect substrate disturbance, so lightweight décor should be secured.
Hystrix Stingray (Porcupine Ray) Compatibility Notes
Classified as semi-aggressive, the Hystrix Stingray (Porcupine Ray) is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten, ornamental shrimp are not safe companions, snails will be treated as food rather than tankmates, and their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the bottom zone can help reduce competition and territorial overlap.
Hystrix Stingray (Porcupine Ray) Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Hystrix Stingray (Porcupine Ray).
Hystrix Stingray (Porcupine Ray) Feeding & Diet Considerations
The Hystrix Stingray (Porcupine Ray) is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided, will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups, actively feeds on snails and can be used as a natural snail population control, and will eat fry, so breeding efforts in the same tank are unlikely to succeed.
Feeding products
We may earn from qualifying purchases
.webp?2026-04-25T14%3A35%3A38.022Z)
Frequently Asked Questions About Hystrix Stingray (Porcupine Ray)
How big does Hystrix Stingray (Porcupine Ray) get?
Hystrix Stingray (Porcupine Ray) (Potamotrygon hystrix) typically reaches a maximum adult size of approximately 40 cm. They have a depressed body shape and a moderate growth rate.
What tank size does Hystrix Stingray (Porcupine Ray) need?
A minimum aquarium volume of 680 litres and a tank length of at least 180 cm are recommended for Hystrix Stingray (Porcupine Ray). This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Hystrix Stingray (Porcupine Ray) need?
Hystrix Stingray (Porcupine Ray) thrives in freshwater only conditions with a temperature range of 24–28°C, a pH between 6 and 7.5, and a general hardness of 1–10 dGH. A moderate water flow is preferred.
Is Hystrix Stingray (Porcupine Ray) peaceful or aggressive?
Hystrix Stingray (Porcupine Ray) is classified as semi-aggressive with an aggression score of 6 out of 10. They can work in community setups but may clash with certain tankmates.
Can Hystrix Stingray (Porcupine Ray) live alone?
Yes, Hystrix Stingray (Porcupine Ray) can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Hystrix Stingray (Porcupine Ray) safe with shrimp?
No. Hystrix Stingray (Porcupine Ray) is known to eat ornamental shrimp and is not recommended for shrimp tanks. Even larger shrimp species like Amano Shrimp may be at risk.
Will Hystrix Stingray (Porcupine Ray) eat snails?
Yes. Hystrix Stingray (Porcupine Ray) actively feeds on snails. While this can be useful for controlling pest snail populations, it means decorative snails should not be housed with this species.
Does Hystrix Stingray (Porcupine Ray) have any special tank requirements?
Yes. Hystrix Stingray (Porcupine Ray) benefits from sand (sifters) and smooth gravel (sensitive barbels) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Plants That Suit Hystrix Stingray (Porcupine Ray)
These plants pair well with Hystrix Stingray (Porcupine Ray) based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Afzel's Anubias
Anubias afzelii
Anubias Barteri
Anubias barteri
Belinda's Buce
Bucephalandra belindae
Buce Motleyana
Bucephalandra motleyana
Christmas Moss
Vesicularia montagnei
Congo Anubias
Anubias heterophylla
Fish Similar to Hystrix Stingray (Porcupine Ray)
Teacup Stingray (Common Freshwater Ray)
Potamotrygon laticeps
The term 'Teacup Stingray' is a highly deceptive trade name used for juvenile freshwater stingrays (often P. laticeps, P. motoro, or P. reticulata). They are not a miniature species. They are highly intelligent, predatory bottom-dwellers that require pristine water, massive aquariums, and fine sand to prevent lethal infections on their soft underbellies.
Flower Stingray
Potamotrygon schroederi
A stunning, large-growing freshwater stingray native to the Rio Negro and Orinoco basins. They feature intricate rosette or flower-like patterns. As apex predators, they require massive aquariums, exceptional biological filtration due to extreme bioloads, and a fine sand substrate to prevent injury to their soft bellies. They possess a venomous tail barb and must be handled with extreme caution.
Freshwater Sole
Brachirus selheimi
A rare and captivating bottom-dwelling flatfish native to Australia and New Guinea. As an ambush predator, it spends most of its time completely buried in fine sand, waiting to strike at small fish or crustaceans. It absolutely requires a soft sand substrate to thrive and prevent severe abrasions to its delicate underside.
Antennae Stingray
Plesiotrygon iwamae
The Antennae Stingray is a delicate, rare freshwater ray native to the Amazon basin. It is distinctive for its extremely long, whip-like tail that can be more than twice its disc width. They require a massive aquarium with an enormous footprint, pristine water quality, and a soft, fine sand substrate to bury themselves. As large piscivores, they will consume any tank mate small enough to fit in their mouths.
Motoro Stingray
Potamotrygon motoro
A spectacular but highly demanding freshwater stingray native to South America, instantly recognizable by its orange-spot 'peacock' pattern. They are massive, heavy-polluting predators that require huge aquariums with pristine water quality. A soft sand substrate is absolutely mandatory to prevent severe bacterial infections on their delicate underbellies. Note: They possess a venomous tail stinger.
Lesser Spiny Eel
Macrognathus aculeatus
A fascinating, elongated bottom-dweller known for its pointed snout. It is primarily nocturnal and spends much of its time buried in the substrate. While peaceful with fish too large to eat, it is an opportunistic predator that will consume small fish, shrimp, and fry. A soft sand substrate is absolutely mandatory to prevent severe bacterial skin infections from burrowing.