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Microrasbora kubotai - Tropical Fish for Sale UK
22–26°C · pH 6–7.5 · 30L
£4.99
A peaceful, shimmering Amazon tetra that adds lively movement and subtle color to a planted community aquarium. Moderate care, peaceful. 23-28C, pH 5.5-7.5.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The fish you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the live fish may show subtle colour or marking differences.
Hemigrammus hyanuary
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A peaceful, shimmering Amazon tetra that adds lively movement and subtle color to a planted community aquarium. Moderate care, peaceful. 23-28C, pH 5.5-7.5.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The fish you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the live fish may show subtle colour or marking differences.
Maintain these water conditions for optimal health and vibrant colors
The small tropical aquarium fish, scientifically known as Hemigrammus hyanuary, a peaceful, shimmering amazon tetra that adds lively movement and subtle color to a planted community aquarium.. Hemigrammus hyanuary, the January tetra or Costello tetra, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae. This fish is found in the Amazon Basin in South America
Native to Amazon Basin, South America, this moderate-care species belongs to the Characidae family and has earned a loyal following among UK aquarists for its unique characteristics and manageable requirements.
The Neon Costello reaches an adult size of approximately 3.0 cm and displays coloration that varies with mood, diet, and water conditions. Peaceful by nature, this species makes an interesting addition to appropriately stocked aquariums.
At Tropical Fish Co, we select only the healthiest specimens with vibrant coloration and active behavior, ensuring you receive premium quality fish for your aquarium.
In the wild, Hemigrammus hyanuary inhabits amazon basin, south america. Understanding their natural environment helps us replicate optimal conditions in the home aquarium.
These waters are typically soft, slightly acidic, and rich in tannins from decomposing leaf litter. Dense vegetation provides shelter and feeding opportunities, while seasonal flooding creates dynamic habitat conditions.
A minimum tank size of 75 litres is essential for housing Neon Costello. Larger aquariums provide more stable water chemistry and greater swimming space, both critical for long-term health.
Provide appropriate hiding places, suitable substrate, and decorations that match their natural habitat preferences. Good filtration and stable water parameters are essential for all freshwater species.
Invest in quality filtration capable of turning over the tank volume 4-6 times per hour, and perform regular 25-30% water changes weekly to maintain pristine conditions.
Always keep Neon Costello in groups of 6+ individuals. Smaller groups cause stress, faded colors, and abnormal behavior. Larger schools create spectacular displays!
Maintaining correct water parameters is crucial for the health of Neon Costello:
This species prefers soft, acidic water. Use RO water remineralized to appropriate GH/KH, add Indian almond leaves or alder cones for tannins, and avoid calcareous decorations that raise pH.
Invest in quality test kits and check parameters weekly. Stability is more important than hitting exact numbers - avoid sudden changes that stress fish.
As a omnivore, Neon Costello requires a carefully balanced diet to maintain optimal health and coloration.
Offer a varied small-particle diet including quality micro pellets or flakes, frozen and live foods such as daphnia, brine shrimp, and bloodworms, with plant-based matter as a supplement.
Vary the diet between quality flakes/pellets, frozen foods (bloodworms, daphnia, brine shrimp), and occasional fresh vegetables. Nutritional variety promotes vibrant colors, strong immunity, and natural behavior.
Remove uneaten food after 3-5 minutes to prevent water quality degradation. A single weekly fasting day can benefit digestion and overall health.
The Neon Costello is classified as peaceful, though individual personality can vary with age, tank size, and stocking density.
This peaceful species thrives in community setups with similarly sized, non-aggressive tankmates. Calm demeanor and gentle nature make it ideal for planted aquariums.
Best kept in a planted, well-filtered aquarium with soft to moderately soft water and subdued lighting. This is a shoaling species that becomes stressed and less colorful if kept in too small a group...
Choose tankmates carefully to ensure a harmonious community aquarium:
Compatible species include:
Avoid housing with:
Always research specific compatibility and introduce new fish gradually, monitoring behavior closely during the first few weeks.
Spawning is typically by scattering eggs among fine-leaved plants or spawning mops in soft, acidic water. Adults should be removed after spawning, as eggs and fry are vulnerable to predation.
Egg-scattering species require dense planting or spawning mops to catch eggs. Remove adult fish immediately after spawning to prevent egg predation. Fry emerge in 24-48 hours and require infusoria or liquid fry food initially.
When you choose Tropical Fish Co for your small tropical aquarium fish purchase, you benefit from:
With decades of combined experience in the UK aquarium trade, we understand what makes healthy, thriving fish. Our Neon Costello specimens are among the finest small tropical aquarium fish available online today.
Order with confidence knowing you're purchasing from a trusted UK specialist. We're passionate about connecting aquarists with exceptional fish for sale UK wide.
Dispatched Tue or Wed, delivered Wed or Thu — every order tracked and insured.
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