An ambush predator native to South Asia, the Gangetic Leaf Fish relies on its mottled camouflage to mimic dead leaves. It has a remarkably large, protrusible mouth and is strictly piscivorous, swallowing smaller fish whole. It requires a dimly lit tank with low flow, heavy planting, and leaf litter to feel secure. Due to its highly predatory nature, it must only be housed with fish too large to be eaten.
Gangetic Leaf Fish At a Glance
Gangetic Leaf Fish Tank Requirements
Will Gangetic Leaf Fish fit in your tank?
Care guides tell you what Gangetic Leaf Fish needs, the next question is whether your tank can safely provide it. Test Gangetic Leaf Fish against your tank size, maintenance needs, and the fish you already keep before you buy.
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Gangetic Leaf Fish Water Parameters
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Gangetic Leaf Fish Temperament & Compatibility
Gangetic Leaf Fish Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard
The standard form found in the aquarium trade. Often imported as wild-caught specimens. While peaceful towards fish it cannot swallow, its massive mouth capacity makes it an extreme danger to nano species and tetras.
Same care requirements as the base species
Also known as: Wild Type, Nandus
Gangetic Leaf Fish Care Guide Summary
The Gangetic Leaf Fish, scientifically known as Nandus nandus, belongs to the Oddballs family group. Adults reach a maximum size of approximately 18 cm and have a compressed body shape with a moderate growth rate. Classified as aggressive, this species primarily occupies the mid-level and bottom zones of the aquarium and produces a high level of biological waste.
To thrive, the Gangetic Leaf Fish requires a brackish tolerant aquarium with a minimum volume of 150 litres and a tank length of at least 90 cm. Water temperature should be maintained between 22°C and 28°C, with a pH range of 6.5–8 and a general hardness of 6–15 dGH. A low water flow is preferred.
Due to its specialist needs, the Gangetic Leaf Fish is best suited for fishkeepers who can provide a carefully planned setup. The Gangetic Leaf Fish is typically available in one standard form.
Gangetic Leaf Fish Habitat Setup
When setting up an aquarium for the Gangetic Leaf Fish, a low 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, leaf litter or blackwater tannins to replicate their natural soft-water habitat, dense planting to provide cover, break sightlines, and reduce stress, and floating plants to diffuse overhead light and create shaded areas.
Gangetic Leaf Fish Compatibility Notes
Classified as aggressive, the Gangetic Leaf Fish 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, and boisterous or fast-moving tankmates may cause this species undue stress. Selecting tankmates that favour different water layers from the mid-level and bottom zones can help reduce competition and territorial overlap.
Gangetic Leaf Fish Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Gangetic Leaf Fish.
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
Show 9 more tank sizes
Gangetic Leaf Fish Feeding & Diet Considerations
The Gangetic Leaf Fish 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, and is primarily active at dusk and dawn, so offering food shortly after lights-off ensures it receives adequate nutrition.
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Frequently Asked Questions About Gangetic Leaf Fish
How big does Gangetic Leaf Fish get?
Gangetic Leaf Fish (Nandus nandus) typically reaches a maximum adult size of approximately 18 cm. They have a compressed body shape and a moderate growth rate.
What tank size does Gangetic Leaf Fish need?
A minimum aquarium volume of 150 litres and a tank length of at least 90 cm are recommended for Gangetic Leaf Fish. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Gangetic Leaf Fish need?
Gangetic Leaf Fish thrives in brackish tolerant conditions with a temperature range of 22–28°C, a pH between 6.5 and 8, and a general hardness of 6–15 dGH. A low water flow is preferred.
Is Gangetic Leaf Fish peaceful or aggressive?
Gangetic Leaf Fish is classified as aggressive with an aggression score of 7 out of 10. Careful tankmate selection is essential to avoid conflict.
Can Gangetic Leaf Fish live alone?
Yes, Gangetic Leaf Fish can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Gangetic Leaf Fish safe with shrimp?
No. Gangetic Leaf Fish 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 Gangetic Leaf Fish have any special tank requirements?
Yes. Gangetic Leaf Fish benefits from leaf litter/blackwater, driftwood (digestion/hiding), plants - densely covered, and plants - floating in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Plants That Suit Gangetic Leaf Fish
These plants pair well with Gangetic Leaf Fish based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
Amazon Frogbit
Limnobium laevigatum
Asian Watergrass
Hygroryza aristata
Asian Watermoss
Salvinia cucullata
Carolina Mosquito Fern
Azolla caroliniana
Common Duckweed
Lemna minor
Crystalwort
Riccia fluitans
Fish Similar to Gangetic Leaf Fish
Amazon Leaf Fish
Monocirrhus polyacanthus
A master of camouflage that perfectly mimics a dead leaf drifting in the water. This species is an extreme ambush predator with a protruding jaw that can swallow prey up to 75% of its own size. It is a 'specialist' species because nearly all specimens require live food (small fish/shrimp) and refuse dry or frozen foods. Requires acidic, blackwater conditions and zero flow.
Frogmouth Catfish
Chaca chaca
An incredibly bizarre ambush predator native to South Asia. With a massive, flat head and cryptic coloration, they perfectly mimic a dead leaf or piece of wood. They are entirely sedentary, moving only to gulp down prey that wanders too close to their cavernous mouths. Because they can easily consume fish up to half their own length, tank mates must be chosen with extreme caution.
Leopard Bushfish (Ctenopoma)
Ctenopoma acutirostre
A fascinating, ancient African anabantoid that mimics a dead leaf to ambush prey. They possess a surprisingly large, extendable mouth. While slow-moving and generally peaceful towards fish too large to swallow, they are efficient predators of small fish and invertebrates. They are crepuscular (active at twilight) and require structure (wood/plants) to feel secure.
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.
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.