🐠 X-Ray Tetra – Sub-adult

Pristella maxillaris | Transparent-bodied schooling tetra with striking fin markings and exceptional community aquarium appeal

Bring elegance and fascination to your aquarium with the X-Ray Tetra. Famous for its partially transparent body that reveals its internal anatomy, Pristella maxillaris is one of the most unique and captivating tetras in the freshwater hobby.

Combined with its distinctive black, white, and yellow fin markings and peaceful schooling nature, the X-Ray Tetra is an excellent choice for planted aquariums and vibrant community displays.

✨ Why aquarists love X-Ray Tetras

✔️ Unique translucent body — one of the most distinctive appearances among freshwater tetras
✔️ Beautiful tricolored fins — striking black, white, and yellow fin patterns
✔️ Peaceful schooling species — creates graceful movement throughout the aquarium
✔️ Hardy and adaptable — suitable for a wide range of freshwater setups
✔️ Excellent community fish — ideal for planted and nature-style aquariums

🌍 About the species

Pristella maxillaris is native to the slow-moving rivers, floodplains, and coastal waterways of South America, particularly in Brazil, Guyana, Venezuela, and the Amazon basin.

These fish are known for:

• Semi-transparent body that gives them their "X-Ray" appearance
• Distinctive black, white, and yellow dorsal and anal fins
• Graceful schooling behavior
• Calm and peaceful temperament
• Excellent adaptability to aquarium life

Their unusual transparency and elegant coloration make them one of the most recognizable tetra species in the hobby.

🏡 Ideal aquarium setup

X-Ray Tetras thrive best in:

• Planted aquariums
• Community tanks
• Nature aquascapes
• South American biotope aquariums
• Well-maintained freshwater systems

Recommended setup:

• 60 liters or larger
• Dense aquatic plants with open swimming areas
• Dark substrate to enhance their coloration
• Stable water parameters
• Efficient biological filtration

⚠️ Compatibility notes

X-Ray Tetras are peaceful schooling fish that coexist well with most similarly sized community species.

Not ideal with:

• Large predatory fish
• Aggressive cichlids
• Highly territorial species
• Fish that may intimidate small schooling species

Best suited for:

✔️ Community aquariums
✔️ Planted tanks
✔️ South American biotope setups
✔️ Beginner and experienced aquarists alike

🚚 Professionally packed for live arrival

Every shipment is treated as a live biological transport, not a standard parcel.

Your fish are packed using:

• Oxygen-filled fish bags
• Temperature-insulated packaging
• Shock-absorbing thermocol protection
• Fastest safe transport routes available

This minimizes transit stress and improves live arrival success.

🛡️ Live Arrival Guaranteed*

Instant Refund for DoAs in accordance with our Refund Policy.

👉 You are not taking the risk alone.

🧭 Is this right for you?

✔️ You want a peaceful and visually unique schooling fish
✔️ You maintain a planted or community aquarium
✔️ You appreciate uncommon yet hardy tetra species
✔️ You enjoy active fish that display beautifully in groups

⚠️ Not ideal if:

• You keep large predatory fish
• Your aquarium contains aggressive territorial species
• You prefer solitary centerpiece fish
• You maintain very small or overcrowded aquariums

🔬 Nero Labs Standard

These fish are maintained with:

• Controlled batch monitoring
• Observation-based selection
• Stress-aware handling
• Survival-focused transport preparation

We prioritize long-term health, coloration quality, and behavioral stability over bulk-volume movement.

👉 Add one of the aquarium hobby's most fascinating tetras

Experience the unique transparency, graceful schooling behavior, and timeless beauty of the X-Ray Tetra from Nero Labs.

X-Ray Tetra (Pristella maxillaris)

Description

The X-Ray Tetra (Pristella maxillaris), offered by Nero Labs, is a selectively maintained ornamental characin recognized for its translucent body, contrasting black-and-yellow fin markings, and peaceful schooling behaviour. Native to the coastal river systems and floodplain waters of northern South America, this species is naturally adapted to slow-moving freshwater habitats with abundant aquatic vegetation and stable environmental conditions.

Body coloration typically presents as nearly transparent to silvery-translucent, allowing portions of the internal skeletal structure and swim bladder to be faintly visible, a characteristic that gives the species its common name. The dorsal, anal, and caudal fins display distinctive bands of black, white, and golden-yellow pigmentation, creating a striking contrast against the otherwise translucent body. Under stable lighting conditions, subtle iridescent blue, green, or silver reflections may become visible across the flanks.

Behaviour is peaceful, active, and strongly schooling-oriented. Individuals exhibit synchronized midwater swimming and establish stable social dynamics when maintained in appropriately sized groups. Their calm temperament and adaptability make them highly compatible with a wide range of peaceful community species. Colour expression, activity, and confidence improve significantly within larger shoals and well-structured aquarium environments.

Specimens supplied are lab-reared and system-acclimated within controlled, closed-system environments, minimizing early-life stress and supporting predictable long-term adaptation to aquarium conditions. This lineage represents domesticated ornamental stock maintained for pattern consistency, behavioural stability, and aquarium suitability rather than wild ecological function or conservation deployment.

System & Rearing Notes

Origin: In-house, Nero Labs
Rearing environment: Controlled, closed system
Line status: Selectively maintained ornamental characin
Behaviour: Peaceful, active, schooling
Swimming profile: Midwater, synchronized open-water movement
Feeding behaviour: Omnivorous; accepts prepared, frozen, and live feeds
Habitat preference: Planted aquaria with open swimming areas and gentle to moderate water movement
Colour development: Stable; fin markings and iridescent highlights become more pronounced with maturity and environmental stability
Morphological traits: Naturally translucent body with distinctive black, white, and yellow fin banding

Minor variation in body transparency, fin pigmentation, and iridescent sheen may occur between individuals and reflects normal biological diversity within maintained ornamental populations.

Availability & Use

Availability of X-Ray Tetras is cycle-dependent and determined by biological readiness rather than inventory-driven targets. This species is suitable for beginner to advanced aquarists seeking a peaceful and highly adaptable schooling fish.

Best suited for planted community aquaria, South American-inspired freshwater systems, and mixed-species displays emphasizing natural schooling behaviour and subtle ornamental elegance.

Important Note

X-Ray Tetras should be maintained in groups to support natural schooling behaviour and reduce stress. Stable water quality, subdued lighting, and planted surroundings help maximize confidence, activity, and the clarity of their characteristic translucent appearance.

Ethical & Operational Context

Distribution of X-Ray Tetras through Nero Labs prioritizes organism welfare, lineage integrity, and responsible propagation of ornamental schooling species. Proceeds support refinement of characin husbandry protocols, behavioural observation programs, and applied ornamental aquaculture initiatives.