Vietnamese Cardinal Minnow
Tanichthys sp.
Vietnamese Cardinal Minnow (Tanichthys sp.) — Easy care, Peaceful, under Danio & Minnow. Minimum tank in the app: 11.9 US gal min; aim for 64–77°F and pH 6–7.5. The Vietnamese Cardinal Minnow is ideal for those looking to create a vibrant, active mid-to-top swimming community.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Vietnam
- East & Southeast Asia
Regional colours match the stocking calculator’s origin map.
Vietnamese Cardinal Minnow Tank Setup
Create a spacious environment with plenty of plants and hiding spots to promote a sense of security. A varied substrate with gentle slopes or patches of open swimming space will cater to their active nature. Moderate lighting enhances their colors and encourages natural behaviors, while ensuring water flow mimics their native habitat helps maintain their activity levels.
What Do Vietnamese Cardinal Minnows Eat?
As omnivores, they adapt well to a variety of foods, but feeding quickly is essential to ensure all individuals receive their share. Fast, competitive feeders may stress them if food is not distributed evenly, so consider using slow-sinking pellets or a feeding strategy that encourages foraging.
Vietnamese Cardinal Minnow Tank Mates
Best paired with similarly sized and temperamentally compatible species, such as small tetras or other peaceful schooling fish. Avoid larger or more aggressive tank mates that may outcompete them for food or space. When housing multiple groups, ensure sufficient space to prevent overcrowding and establish clear shoaling dynamics within the species.
Are Vietnamese Cardinal Minnows Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the need for stable water parameters, particularly pH and temperature, which can lead to health issues. neglecting to keep them in groups of at least eight can result in stress and behavioral changes.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




