A large, predatory, and fascinating species widely known in the hobby as the 'American Tigerfish' (AT) or Silver Datnoid. Note: Scientific consensus now recognizes Datnioides polota as the valid name, with D. quadrifasciatus often used as a synonym. Naturally found in brackish estuaries and river mouths, they adapt to freshwater but thrive in hard, alkaline, light-brackish conditions. They are aggressive predators and best kept singly or in very large groups.
Silver Tiger Perch (American Tigerfish) At a Glance
Silver Tiger Perch (American Tigerfish) Tank Requirements
Will Silver Tiger Perch (American Tigerfish) fit in your tank?
Care guides tell you what Silver Tiger Perch (American Tigerfish) needs, the next question is whether your tank can safely provide it. Test Silver Tiger Perch (American Tigerfish) against your tank size, maintenance needs, and the fish you already keep before you buy.
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Silver Tiger Perch (American Tigerfish) Water Parameters
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Silver Tiger Perch (American Tigerfish) Temperament & Compatibility
Silver Tiger Perch (American Tigerfish) Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard
The standard form. Adults are highly territorial toward conspecifics. It is recommended to keep them either as a single specimen or in a large, well-structured group of 5+ to disperse aggression.
Differs in 1 trait from base species
Juvenile (Grow-out)
Juveniles are gregarious and less aggressive than adults. While they can be kept in smaller groups, they require massive tanks as they grow. High-quality filtration is mandatory.
Differs in 3 traits from base species
Also known as: Small
Silver Tiger Perch (American Tigerfish) Care Guide Summary
The Silver Tiger Perch (American Tigerfish), scientifically known as Datnioides polota, belongs to the Oddballs family group. Adults reach a maximum size of approximately 35 cm and have a compressed body shape with a slow growth rate. Classified as aggressive, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a extreme level of biological waste.
To thrive, the Silver Tiger Perch (American Tigerfish) requires a brackish tolerant aquarium with a minimum volume of 650 litres and a tank length of at least 180 cm. Water temperature should be maintained between 20°C and 28°C, with a pH range of 7.5–9 and a general hardness of 15–30 dGH. A moderate water flow is preferred.
Due to its specialist needs, the Silver Tiger Perch (American Tigerfish) is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 2 varieties: Standard 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.
Silver Tiger Perch (American Tigerfish) Habitat Setup
When setting up an aquarium for the Silver Tiger Perch (American Tigerfish), 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 driftwood, which can serve as both a hiding place and a dietary supplement.
Silver Tiger Perch (American Tigerfish) Compatibility Notes
Classified as aggressive, the Silver Tiger Perch (American Tigerfish) 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 territorial behaviour may cause issues if hiding spots or floor space are limited. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Silver Tiger Perch (American Tigerfish) Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Silver Tiger Perch (American Tigerfish).
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Frequently Asked Questions About Silver Tiger Perch (American Tigerfish)
How big does Silver Tiger Perch (American Tigerfish) get?
Silver Tiger Perch (American Tigerfish) (Datnioides polota) typically reaches a maximum adult size of approximately 35 cm. They have a compressed body shape and a slow growth rate.
What tank size does Silver Tiger Perch (American Tigerfish) need?
A minimum aquarium volume of 650 litres and a tank length of at least 180 cm are recommended for Silver Tiger Perch (American Tigerfish). This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Silver Tiger Perch (American Tigerfish) need?
Silver Tiger Perch (American Tigerfish) thrives in brackish tolerant conditions with a temperature range of 20–28°C, a pH between 7.5 and 9, and a general hardness of 15–30 dGH. A moderate water flow is preferred.
Is Silver Tiger Perch (American Tigerfish) peaceful or aggressive?
Silver Tiger Perch (American Tigerfish) is classified as aggressive with an aggression score of 7 out of 10. Careful tankmate selection is essential to avoid conflict.
Can Silver Tiger Perch (American Tigerfish) live alone?
Yes, Silver Tiger Perch (American Tigerfish) can be kept singly or in a group. They are flexible and adapt well to both setups.
Does Silver Tiger Perch (American Tigerfish) have any special tank requirements?
Yes. Silver Tiger Perch (American Tigerfish) benefits from driftwood (digestion/hiding) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Plants That Suit Silver Tiger Perch (American Tigerfish)
These plants pair well with Silver Tiger Perch (American Tigerfish) 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
Anubias Barteri
Anubias barteri
Balansae
Cryptocoryne crispatula
Broadleaf Crinum
Crinum natans
Fish Similar to Silver Tiger Perch (American Tigerfish)
Silver Datnoid (Silver Tigerfish)
Datnioides polota
A striking predatory fish known for its deep body and tiger-like stripes. Unlike other Datnoids, the Silver Datnoid is euryhaline and naturally inhabits estuaries; while it can survive in freshwater, it thrives in light brackish conditions. They are ambush predators with highly protrusible jaws capable of swallowing surprisingly large prey.
Indonesian Datnoid (Tiger Fish)
Datnioides microlepis
A massive, deep-bodied ambush predator highly prized by monster fish keepers for its striking black and gold 'tiger' stripes. Native to the freshwater rivers of Southeast Asia, they possess huge mouths and will consume any fish small enough to fit. They are notoriously shy when young but grow into bold, impressive centerpieces. Due to intense conspecific aggression, they should be kept entirely solitary or in groups of 4 or more to disperse bullying.
False Siamese Algae Eater (Stonelapping Minnow)
Garra cambodgiensis
A cyprinid native to fast-flowing streams in Southeast Asia. It is notoriously sold misidentified as the true Siamese Algae Eater (Crossocheilus oblongus). Unlike the true SAE, its black lateral stripe stops at the base of the tail fin rather than extending through it, and it features a yellowish stripe above the black line. It is an excellent biofilm grazer but does not eat Black Beard Algae as effectively. They require highly oxygenated water and become very territorial with conspecifics as they age.
Freshwater Shark (Wallago)
Wallago attu
An apex predator native to South and Southeast Asia, infamous for its immense size, huge mouth, and voracious predatory nature. It will consume any tank mate that fits into its capacious mouth and is known to bite aggressively when handled. This species is utterly unsuitable for standard home aquariums and requires an enormous custom pond or public aquarium setup.
Tambraparni Barb
Puntius tambraparniei
The Tambraparni Barb (now scientifically classified as Dawkinsia tambraparniei) is a medium-sized, highly active schooling fish native to the fast-flowing rivers of the Western Ghats in India. Known for their shimmering silver bodies adorned with striking dark blotches, they require a spacious aquarium with high water flow and high dissolved oxygen. While peaceful, their boisterous swimming can stress shy tank mates.
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.