Lemon White Cloud Mountain Minnow - Tanichthys kuehnei Fish Profile & Care Guide
Introduction
Lemon white Cloud Mountain Minnows (Tanichthys kuehnei) is a lesser-known yet captivating freshwater fish that has become popular among aquarists for its hardiness and stunning colours. Native to the cool, fast-flowing streams of northern Vietnam, this species is a close relative of the well-known white cloud mountain minnow (Tanichthys albonubes) and shares its peaceful temperament and vibrant appearance. These minnows are characterized by their slender bodies adorned with shimmering hues.
Lemon white Cloud Mountain Minnows are social, shoaling fish that should ideally be kept in groups of six or more to ensure their well-being. This reduces stress and allows them to display their natural social behaviours. They exhibit vibrant, interactive movements in more extensive shoals, making them an ideal choice for community aquariums.
Thanks to their peaceful temperament, Lemon White Cloud Mountain Minnows make excellent additions to community aquariums. Ideal tankmates include other small, tranquil species such as Danios, small rasboras, and other fish adapted to cooler water. They also coexist well with gentle bottom dwellers like small Corydoras species. It is advisable to avoid pairing them with aggressive or significantly larger fish, as such tankmates may cause stress or outcompete the Lemon White Cloud Mountain Minnows.
When setting up an aquarium for Lemon White Cloud Mountain Minnow, aim for a tank size of at least 60 litres (15 gallons) for a small group. Use a sandy or fine gravel substrate, as these minnows appreciate a natural-looking environment. They enjoy a planted tank with ample hiding spaces created by driftwood, rocks, and live plants like Anubias, Java ferns, and Vallisneria.
Additionally, gentle water movement will mimic the calm streams of their natural habitats and make them feel more secure. Lighting should be moderate, as they come from shaded environments, and too much light can cause stress. They are active swimmers and benefit from open swimming spaces in the tank's mid-section. It's also essential to keep water quality high with regular partial water changes and efficient filtration, as they are sensitive to poor water quality.
The Lemon White Cloud Mountain Minnow is distinguished by a black stripe that runs precisely along the mid-lateral line rather than above, setting it apart visually from other varieties. It also features a higher number of anal fin rays, typically around 9.5, and has white margins on the anal fin, as opposed to the usual red.
The fish exhibits a light brown dorsal area, a white underside, and two distinct mid-lateral stripes: a bold black stripe accented by an iridescent blue shimmer and a secondary white or orange stripe situated just above the dark line. Both males and females display a conspicuous black spot at the base of the caudal fin and exhibit varying intensities of red colouration in the central region of the caudal fin as well as on the pelvic and anal fins.
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Photos
Sexual Dimorphism
It is relatively straightforward to differentiate between male and female Lemon White Cloud Mountain Minnows. Males are distinguishable from females by the presence of tubercles on the snout, elongated anal-fin rays, and more vivid red colouration in the anal and pelvic fins.
Quick Facts
| Scientific Name | Tanichthys kuehnei |
|---|---|
| Year Described | 2019 |
| Other Names | Yellow White Cloud Mountain Minnow |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Cypriniformes |
| Family | Cyprinidae |
| Genus | Tanichthys |
| Origins | Vietnam |
| Approx Max Size | 3.5 cm |
| Temperament | Peaceful |
| Aquarium Level | Middle - Top |
| Difficulty | Beginner |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg-Scatterer |
| Average Lifespan | Up to 5 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 6.0 - 7.5 |
| GH | 4 - 12 |
| ℉ | 64 - 72 |
|---|---|
| ℃ | 18 - 22 |
Natural Habitat
The Lemon White Cloud Mountain Minnow originates from the Rach Hoi Da stream in Vietnam's Hue Province, Central Vietnam. This habitat is characterized by exceptionally clear water with a neutral pH close to 7 and very low conductivity, creating pristine conditions ideal for this species. The stream's biotope includes a sandy substrate interspersed with rocks and filamentous algae, providing a natural environment for these minnows to thrive.
Breeding
Breeding Lemon White Cloud Mountain Minnows can be relatively straightforward, even for beginner aquarists, as these fish are known to spawn readily in well-maintained aquariums. To encourage breeding, set up a dedicated breeding tank with slightly warmer water, ideally around 22°C, and provide plenty of delicate, finely textured plants such as Java moss or spawning mops where the fish can lay their eggs. A gentle sponge filter is recommended to prevent any risk to delicate eggs or fry.
Once the breeding tank is established, condition the fish with high-quality live or frozen foods, such as daphnia, brine shrimp, or bloodworms. When well-conditioned, males display brighter colours and begin to court females by showing off their vivid hues and dancing displays. Females respond by releasing eggs fertilized by the male in open water. After spawning, removing the adults is best to prevent them from consuming the eggs.
Depending on the water temperature, the eggs will hatch within 24 to 48 hours, with the fry becoming free-swimming shortly afterwards. Feed the fry with infusoria or commercially available fry food until they are large enough to accept microworms or newly hatched brine shrimp. With attentive care and regular water changes, the fry will grow steadily and begin to show adult colouration in a few weeks, marking the successful breeding of this charming species.
Diet & Feeding
Lemon White Cloud Mountain Minnows have relatively simple feeding habits, making them easy to maintain in a community aquarium. In the wild, they are omnivores, feeding on small insects, larvae, algae, and other organic material found in their natural habitats. In captivity, they readily accept various foods, including high-quality flakes, micro-pellets, and live or frozen options. For optimal health and colour, it's beneficial to supplement their diet with protein-rich live or frozen foods such as brineshrimp, daphnia, and bloodworms.
Feed these Minnows small amounts twice daily, observing them to ensure they're eating comfortably, as overfeeding can lead to poor water quality. Tanichthys kuehnei often feeds mid-water and at the surface, making them easy to observe during feeding. A varied diet promotes their vibrant colours and supports robust immune health, ensuring they thrive and remain active in a well-balanced aquarium.
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Published: 08 Nov 2024
Last Updated: 08 Nov 2024