A massive, fast-swimming catfish native to the Mekong basin, recognizable by a distinct large black spot just above its pectoral fins. Like the Iridescent Shark, it is a 'tank buster' that grows well over a meter in length. They are easily startled and prone to panic-swimming into glass, requiring enormous tanks with smooth decor.
Spot Pangasius At a Glance
Spot Pangasius Tank Requirements
Will Spot Pangasius fit in your tank?
Care guides tell you what Spot Pangasius needs, the next question is whether your tank can safely provide it. Test Spot Pangasius against your tank size, maintenance needs, and the fish you already keep before you buy.
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Spot Pangasius Water Parameters
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Spot Pangasius Temperament & Compatibility
Spot Pangasius Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard Adult
The fully grown adult form. Requires a massive custom aquarium or heated indoor pond. Though generally peaceful toward similar-sized fish, its massive mouth makes it a severe predation risk to anything smaller.
Differs in 1 trait from base species
Also known as: Adult, Monster Fish
Juvenile (Grow-out)
Typical size sold in stores. They grow extremely fast and will rapidly outgrow standard home aquariums. Highly prone to panic-swimming, so they must be kept in tanks with ample open swimming space and smooth decor to prevent severe injury.
Differs in 4 traits from base species
Also known as: Baby, Small Pangasius
Spot Pangasius Care Guide Summary
The Spot Pangasius, scientifically known as Pangasius larnaudii, belongs to the Catfish family group. Adults reach a maximum size of approximately 130 cm and have a fusiform body shape with a fast growth rate. Classified as mostly peaceful, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a extreme level of biological waste.
To thrive, the Spot Pangasius requires a freshwater only aquarium with a minimum volume of 4000 litres and a tank length of at least 350 cm. Water temperature should be maintained between 24°C and 30°C, with a pH range of 6.5–7.5 and a general hardness of 2–15 dGH. A moderate water flow is preferred.
The Spot Pangasius 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.
Spot Pangasius Habitat Setup
When setting up an aquarium for the Spot Pangasius, a moderate water flow best suits their natural preferences. Because this species occupies the mid-level and bottom zones, the aquarium layout should prioritise open swimming space in the centre of the tank for free movement and sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include smooth gravel or rounded substrate to protect their sensitive barbels. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper.
Spot Pangasius Compatibility Notes
Classified as mostly peaceful, the Spot Pangasius 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 and ornamental shrimp are not safe companions. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Spot Pangasius Feeding & Diet Considerations
The Spot Pangasius is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided and will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups.
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Frequently Asked Questions About Spot Pangasius
How big does Spot Pangasius get?
Spot Pangasius (Pangasius larnaudii) typically reaches a maximum adult size of approximately 130 cm. They have a fusiform body shape and a fast growth rate.
What tank size does Spot Pangasius need?
A minimum aquarium volume of 4000 litres and a tank length of at least 350 cm are recommended for Spot Pangasius. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Spot Pangasius need?
Spot Pangasius thrives in freshwater only conditions with a temperature range of 24–30°C, a pH between 6.5 and 7.5, and a general hardness of 2–15 dGH. A moderate water flow is preferred.
Is Spot Pangasius peaceful or aggressive?
Spot Pangasius is classified as mostly peaceful with an aggression score of 3 out of 10. They are generally well-suited to peaceful community tanks.
Can Spot Pangasius live alone?
Yes, Spot Pangasius can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Spot Pangasius safe with shrimp?
No. Spot Pangasius is known to eat ornamental shrimp and is not recommended for shrimp tanks. Even larger shrimp species like Amano Shrimp may be at risk.
Does Spot Pangasius have any special tank requirements?
Yes. Spot Pangasius benefits from smooth gravel (sensitive barbels) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Spot Pangasius need a lid on the tank?
Yes. Spot Pangasius is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.
Top Tank Mates for Spot Pangasius
These fish are strong compatibility matches for Spot Pangasius based on water preferences, temperament, adult size, and tank behavior.
Gold Spot Pleco (L001 / L022)
Pterygoplichthys joselimaianus
Ideal Tank MatesFestivum
Mesonauta festivus
Ideal Tank MatesApistogramma Marmor (Marbled Apisto)
Apistogramma erythrura
Ideal Tank MatesAlligator Pleco
Pterygoplichthys scrophus
Ideal Tank MatesGolden Bristlenose Pleco
Ancistrus sp. L144
Ideal Tank MatesBanded Gourami
Trichogaster fasciata
Ideal Tank MatesPlants That Suit Spot Pangasius
These plants pair well with Spot Pangasius based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
African Onion Plant
Crinum calamistratum
Afzel's Anubias
Anubias afzelii
Amazon Sword
Echinodorus amazonicus
Anacharis
Egeria densa
Anubias Barteri
Anubias barteri
Ashy Pipewort
Eriocaulon cinereum
Fish Similar to Spot Pangasius
Shortbarbel Pangasius
Pangasius micronemus
A massive, highly active riverine catfish native to Southeast Asia. Like its cousin the Iridescent Shark, it is a nervous and skittish swimmer prone to panicking and injuring itself on tank glass. Due to its enormous adult size of up to 1 meter (39 inches), it is strictly suited for only the largest custom aquariums, indoor ponds, or public aquaria. It is an opportunistic predator that will consume any tank mate small enough to fit in its large mouth.
Pangasius nasutus (Long-Nosed Pangasius)
Pangasius nasutus
A massive riverine shark-catfish native to Southeast Asia. It is an extremely active 'tank buster' that reaches up to 90cm (3 feet) in length. They are easily startled, prone to panic attacks, and can severely injure themselves by smashing into the aquarium glass. Due to their immense adult size, they are strictly suited for massive custom aquariums or heated indoor ponds.
Iridescent Shark
Pangasianodon hypophthalmus
The Iridescent Shark is not a true shark, but a highly active, schooling catfish native to Southeast Asia. While frequently sold as tiny juveniles, they are notorious 'tank busters' that grow to massive sizes. They are extremely skittish and easily spooked, often injuring themselves by crashing into aquarium glass. They are best suited for heated indoor ponds or massive custom aquariums.
Pungas Catfish
Pangasius pangasius
A colossal riverine catfish native to the Indian subcontinent. While highly important for aquaculture, they are disastrous for home aquariums. They grow rapidly to enormous sizes (up to 150-300cm), are easily spooked (often resulting in them ramming the tank glass at high speeds), and will swallow any tank mate that fits in their massive mouths.
Chao Phraya Giant Catfish (Paroon Shark)
Pangasius sanitwongsei
An apex predator native to the Mekong and Chao Phraya basins. This true 'monster fish' is completely unsuitable for home aquariums. They grow to massive proportions, are highly active, and easily startled—often severely injuring themselves by crashing into tank walls. They possess a massive appetite and are highly piscivorous, consuming any tank mate that fits in their mouth.
Pictus Catfish
Pimelodus pictus
An extremely active, striking silver catfish with black spots and incredibly long barbels, native to South America. While peaceful toward similarly sized tank mates, they are highly effective nocturnal predators that will easily swallow small fish (like Neon Tetras) whole. They are scaleless and possess sharp pectoral spines that can easily become entangled in aquarium nets.