Tanichthys micagemmae 2-2.5 cm | Vietnamese White Cloud

Overview

Tanichthys micagemmae, often sold as the Vietnamese White Cloud Mountain Minnow, is a superb choice for aquarists looking for a small, active and peaceful shoaling fish. At just 2–2.5 cm on sale and reaching around 3 cm as an adult, this species brings constant movement, subtle iridescence and a natural, understated beauty to the aquarium.

Unlike many brightly coloured tropical fish, Tanichthys micagemmae has a refined look that really shines in a well-planted tank. Males develop stronger colour and a more elegant profile, while both sexes are hardy, adaptable and rewarding to keep. They are best maintained in a group, where their confidence, colour and natural shoaling behaviour are most evident.

This species is a great option for beginners and experienced keepers alike, especially those who prefer cooler water setups, planted community aquariums or compact nano tanks with plenty of swimming space. With sensible care, stable water conditions and a varied diet, these fish are long-lived, active and full of character. We offer fast UK delivery and a live arrival guarantee for peace of mind when ordering online.

Care at a Glance

Origin & Natural Habitat

Tanichthys micagemmae is native to Vietnam, where it inhabits cool, clear, well-oxygenated waters. In nature, fish from this group are typically found in streams and shallow waterways with moderate flow, abundant dissolved oxygen and plenty of marginal vegetation. These environments are often rich in plant cover, leaf litter and natural microfauna, which provide both shelter and feeding opportunities.

This background explains why the species does so well in planted aquariums with open swimming areas and gentle filtration. It is adapted to relatively fresh, clean water rather than warm, stagnant conditions, so it is especially suitable for aquarists who enjoy cooler community tanks or unheated rooms that remain within the recommended range.

Because it comes from a habitat with seasonal variation and good water movement, this fish appreciates stability, cleanliness and a tank that feels natural rather than overstocked. A mature aquarium with live plants and subtle hardscape will help bring out its best behaviour and colour.

Tank Setup & Water Parameters

A well-planted aquarium is ideal for Tanichthys micagemmae. A dark substrate, driftwood, fine-leaved plants and some open swimming space will create a comfortable environment and make the fish’s reflective markings stand out. Floating plants can be useful too, as they help diffuse light and give the fish a sense of security.

Although this species is hardy, it thrives best in clean, stable water with regular maintenance. Aim for a mature filter with gentle to moderate flow and excellent oxygenation. Avoid strong, turbulent currents that may overwhelm such a small fish, but do ensure the tank is well circulated. Weekly partial water changes are recommended to keep nitrate low and water quality high.

Recommended parameters:

• Temperature: 18–25°C
• pH: 6.2–7.8
• Hardness: 5–20 dGH

A minimum tank of 60 litres is recommended for a proper shoal, though larger aquariums are always better. These fish are active and look best when kept in a group of at least 8–10 individuals. In a larger shoal, they display more natural behaviour, reduced shyness and improved colour.

As with all live fish, acclimation should be done carefully. Float the bag to equalise temperature, then gradually mix tank water into the bag over time before release. This helps reduce stress and supports a smooth transition into their new home.

Feeding Guide

Tanichthys micagemmae is an omnivore with a preference for small foods. In the aquarium, it will readily accept high-quality micro pellets, crushed flakes and fine granules, but its diet should be varied to support health, colour and breeding condition.

Offer a mix of:

• Quality tropical flakes or micro pellets
• Frozen foods such as daphnia, cyclops and baby brine shrimp
• Live foods where appropriate and safe to use
• Occasional plant-based matter or spirulina-based foods

Feed small amounts once or twice daily, only what the fish can consume in a minute or two. Because of their tiny mouths, food size matters; oversized foods will be ignored. A varied diet helps maintain energy levels and encourages the best body condition and colouration.

As with many small shoaling fish, overfeeding should be avoided. Excess food can quickly affect water quality, especially in smaller aquariums. Keeping the tank clean and feeding carefully will help this species remain active and healthy.

Tank Mates / Compatibility

This is a peaceful community fish that does best with other calm species of similar size and temperament. Ideal tank mates include small rasboras, other White Cloud varieties, peaceful danios, small Corydoras, Otocinclus and non-aggressive shrimp in suitably planted setups. It also works well in species-only tanks, where a larger shoal can be the main attraction.

Because it is so small, avoid housing it with larger, boisterous or predatory fish that may intimidate or eat it. Fin-nippers and highly territorial species should also be avoided. Fast, aggressive tank mates can stress the shoal and prevent natural behaviour.

For best results, keep the aquarium cool to moderately warm, well planted and not overcrowded. A calm environment with plenty of cover will allow these fish to settle quickly and display their best colours.

Why Buy from Tropical Fish Co

At Tropical Fish Co, we take pride in supplying healthy, carefully selected live fish with attention to welfare from packing through to delivery. Our stock is prepared with care to help ensure your fish arrive in excellent condition, and we back every order with a live arrival guarantee.

We also offer fast UK delivery, so your fish spend less time in transit and more time settling into their new home. Whether you are building a cool-water planted aquarium or adding a delicate shoal to an established community tank, Tanichthys micagemmae is a charming and rewarding choice.

Choose Tropical Fish Co for quality livestock, reliable service and expert support for your aquarium journey.