A fascinating, highly predatory surface-dwelling fish with a long, beak-like mouth filled with sharp teeth. Despite the common name, it is a needlefish, not a true gar. They are notoriously skittish and prone to fatal jumping or injuring their delicate snouts on tank walls if startled. They strictly require a tight-fitting lid and a very long tank with open swimming space at the surface.
Needlenose Gar At a Glance
Needlenose Gar Tank Requirements
Will Needlenose Gar fit in your tank?
Care guides tell you what Needlenose Gar needs, the next question is whether your tank can safely provide it. Test Needlenose Gar against your tank size, maintenance needs, and the fish you already keep before you buy.
Useful setup supplies
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Needlenose Gar Water Parameters
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Needlenose Gar Temperament & Compatibility
Needlenose Gar Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard (Adult)
Fully grown Needlenose Gar. Will readily consume any fish small enough to fit in its beak. Requires a minimum 4-foot (120cm) tank length to allow burst swimming without breaking their fragile snouts against the glass.
Same care requirements as the base species
Also known as: Adult Needlefish
Juvenile (Grow-out)
Juvenile specimen typically sold around 10cm (4 inches). They grow extremely fast and must be fed an appropriate carnivorous diet. Requires an immediate upgrade to a large tank as they mature to avoid snout stunting.
Differs in 3 traits from base species
Also known as: Baby Needlefish, Baby Gar
Needlenose Gar Care Guide Summary
The Needlenose Gar, scientifically known as Xenentodon cancila, belongs to the Oddballs family group. Adults reach a maximum size of approximately 30 cm and have a fusiform body shape with a fast growth rate. Classified as semi-aggressive, this species primarily occupies the surface zone of the aquarium and produces a high level of biological waste.
To thrive, the Needlenose Gar requires a brackish tolerant aquarium with a minimum volume of 200 litres and a tank length of at least 120 cm. Water temperature should be maintained between 22°C and 28°C, with a pH range of 6.5–7.5 and a general hardness of 5–15 dGH. A moderate water flow is preferred.
The Needlenose Gar 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.
Needlenose Gar Habitat Setup
When setting up an aquarium for the Needlenose Gar, a moderate water flow best suits their natural preferences. Because this species occupies the surface zone, the aquarium layout should prioritise adequate surface area with floating cover to make them feel secure near the waterline. Useful additions include floating plants to diffuse overhead light and create shaded areas. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper.
Needlenose Gar Compatibility Notes
Classified as semi-aggressive, the Needlenose Gar 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 their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the surface zone can help reduce competition and territorial overlap.
Needlenose Gar Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Needlenose Gar.
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
Needlenose Gar Feeding & Diet Considerations
The Needlenose Gar 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 will eat fry, so breeding efforts in the same tank are unlikely to succeed.
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Frequently Asked Questions About Needlenose Gar
How big does Needlenose Gar get?
Needlenose Gar (Xenentodon cancila) typically reaches a maximum adult size of approximately 30 cm. They have a fusiform body shape and a fast growth rate.
What tank size does Needlenose Gar need?
A minimum aquarium volume of 200 litres and a tank length of at least 120 cm are recommended for Needlenose Gar. This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Needlenose Gar need?
Needlenose Gar thrives in brackish tolerant conditions with a temperature range of 22–28°C, a pH between 6.5 and 7.5, and a general hardness of 5–15 dGH. A moderate water flow is preferred.
Is Needlenose Gar peaceful or aggressive?
Needlenose Gar 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 Needlenose Gar live alone?
Yes, Needlenose Gar can be kept singly or in a group. They are flexible and adapt well to both setups.
Is Needlenose Gar safe with shrimp?
No. Needlenose Gar 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 Needlenose Gar have any special tank requirements?
Yes. Needlenose Gar benefits from plants - floating in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Needlenose Gar need a lid on the tank?
Yes. Needlenose Gar 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.
Plants That Suit Needlenose Gar
These plants pair well with Needlenose Gar 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 Needlenose Gar
Longnose Gar
Lepisosteus osseus
A primitive, highly predatory fish native to North America. Known for its extremely elongated snout filled with teeth and tough, armor-like ganoid scales. As an ambush predator that breathes atmospheric air, it often hovers motionless near the surface. Due to its massive adult size, it is strictly considered a 'Monster Fish' suitable only for massive custom enclosures, indoor ponds, or public aquariums. It will consume any tank mate small enough to fit in its mouth.
Florida Gar
Lepisosteus platyrhincus
A prehistoric, heavily armored ambush predator native to the southeastern United States. They possess an elongated, torpedo-like body and a beak filled with sharp teeth. As an apex predator, they will consume any tank mate that fits in their mouths, but are generally peaceful toward fish too large to eat. They require massive aquariums and a secure, weighted lid due to their powerful jumping capability.
Alligator Gar
Atractosteus spatula
A massive, primitive ambush predator native to North and Central America, known for its crocodilian snout and armor-like ganoid scales. They grow to enormous sizes and are strictly for public aquaria or highly advanced monster fish keepers with massive custom indoor ponds. They are air-breathers and incredibly hardy, but their size makes them entirely unsuitable for standard home aquariums.
Arrowhead Puffer
Pao suvattii
A highly predatory freshwater pufferfish native to the Mekong basin. Named for its V-shaped, flattened head, it is a specialized ambush predator that buries itself in sand with only its eyes and upwards-facing mouth exposed. It is notoriously aggressive and will consume or fatally bite any tankmate, regardless of size. Must be kept strictly solitary.
African Knifefish
Xenomystus nigri
A fascinating nocturnal predator named for its blade-like shape. Lacking a dorsal fin, it moves by rippling its long anal fin, allowing it to easily swim backward and forward. While peaceful with larger tank mates, it is an opportunistic piscivore that will swallow any fish or invertebrate small enough to fit in its mouth. It requires dim lighting and plenty of caves (PVC or driftwood) to feel secure during the day.
Zebra Shovelnose (Tigrinus Catfish)
Brachyplatystoma tigrinum
A striking and highly sought-after predatory catfish from the fast-flowing Amazonian rapids. Known for its striking vertical zebra stripes and incredibly long dorsal fin streamer. They are a 'monster fish' requiring massive enclosures, pristine water, and extreme oxygenation. They are very sensitive to poor water quality.