Green Neon Tetra: Fish Species Profile
Characteristics
- Scientific Name: Paracheirodon simulans
- Family: Characidae
- Origin: Amazon Basin, South America
- Social Behavior: Peaceful, schooling fish
- Tank Level: Middle regions
- Minimum Tank Size: 10 gallons
- Diet: Omnivore
- Breeding Method: Egg layer
- Care Level: Intermediate
- Preferred pH Range: 5.0 to 6.5
- Water Hardness: Very soft to moderately soft
- Temperature Range: 74 to 82°F (23 to 28°C)
Origin and Distribution
The Green Neon Tetra (Paracheirodon simulans), also known as the False Neon Tetra, is native to the upper Orinoco and Negro Rivers in South America. These fish inhabit slow-moving, blackwater tributaries rich in vegetation and organic matter, providing a dimly lit environment with soft, acidic waters.
Colors and Markings
Green Neon Tetras are distinguished by their vibrant blue-green horizontal stripe that extends from the nose to the tail, shimmering under aquarium lighting. Unlike their close relatives, the Neon and Cardinal Tetras, the red coloration on Green Neons is minimal, often appearing faint or absent. Their slender, torpedo-shaped bodies and translucent fins contribute to their delicate appearance.
Tankmates
Due to their peaceful nature and small size, Green Neon Tetras are ideal candidates for community aquariums with other non-aggressive species. Suitable tankmates include:
- Other small tetras (e.g., Ember Tetras)
- Rasboras
- Corydoras catfish
- Dwarf gouramis
- Small, peaceful shrimp
It’s advisable to avoid housing them with larger or aggressive fish that may view them as prey or outcompete them for food.
Care
Green Neon Tetras require specific conditions to thrive:
- Tank Setup: Provide a well-planted aquarium with ample hiding spots and subdued lighting to mimic their natural habitat. Floating plants can help diffuse light and create shaded areas.
- Water Parameters: Maintain soft, acidic water with stable parameters. Regular water changes and efficient filtration are essential to keep ammonia and nitrate levels low.
- Group Size: Keep them in groups of at least six to promote natural schooling behavior and reduce stress.
Diet and Feeding
As omnivores, Green Neon Tetras thrive on a varied diet:
- Staple Foods: High-quality micro-pellet or flake foods formulated for small tropical fish.
- Supplements: Live or frozen foods such as brine shrimp, daphnia, and micro-worms.
- Feeding Frequency: Offer small amounts multiple times a day, ensuring they consume all the food within a few minutes to prevent overfeeding and maintain water quality.
Gender Differences
Distinguishing between male and female Green Neon Tetras can be challenging due to their similar appearances. However, females are generally slightly larger with a rounder abdomen, especially when carrying eggs, while males tend to be more slender.
Breeding
Breeding Green Neon Tetras in captivity can be challenging but is achievable with proper conditions:
- Breeding Tank: Set up a separate tank with soft, acidic water and a temperature around 77°F (25°C). Provide fine-leaved plants or spawning mops for egg deposition.
- Spawning: Condition the breeding pair with high-quality live or frozen foods. The female will scatter eggs among the plants, and the male will fertilize them.
- Post-Spawning: Remove the adults after spawning to prevent them from eating the eggs. Eggs typically hatch within 24 hours.
- Fry Care: Feed the fry infusoria or commercially available liquid fry food until they are large enough to accept finely crushed flake food or baby brine shrimp.
Further Research
For more detailed information on Green Neon Tetra care, breeding techniques, and tank setups, consider exploring specialized aquarium literature or consulting with experienced aquarists.
FAQ
How long do Green Neon Tetras live? With proper care, they can live between 2 to 3 years.
Can Green Neon Tetras be kept with shrimp? Yes, they are generally safe to keep with small, peaceful shrimp species.
Do Green Neon Tetras require a heater? Yes, maintaining a stable temperature within their preferred range is essential for their health.

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