Nano Fish for Sale
Nano fish are small, colorful species that thrive in planted aquariums, nano tanks, and community setups. Perfect for 5–20 gallon aquariums, they're ideal for homes, offices, and aquascapes — beginner-friendly yet beloved by advanced aquascapers for their stunning colors and lively schooling behavior. Here at Tropical Treasures in Cheyenne, our nano fish ship nationwide with a live arrival guarantee.
Popular Nano Fish Varieties
Our nano selection rotates often, but favorites include Celestial Pearl Danios (the "galaxy rasbora"), Chili and Mosquito Rasboras, Scarlet Badis, Pencilfish, Endlers, Pseudomugil blue-eyes, and ricefish. For schooling color, many keepers pair nano fish with small tetras and rasboras. Not sure where to start? Our guide to the best nano fish for planted tanks walks through plant-safe species for aquascapes.
Nano Fish Care Tips
Most nano fish come from soft, warm, slow-moving waters and do best in a mature, stable tank — never add them to an uncycled aquarium. Aim for clean water with gentle filtration, and feed small, frequent meals of micro-pellets, crushed flakes, and frozen foods sized for tiny mouths. Build their world with live aquarium plants and easy low-light plants for cover, a reliable heater, and gentle filtration. New to the hobby? Avoid the usual pitfalls in our common aquarium mistakes guide.
Best Tank Mates for Nano Fish
Nano fish are peaceful and pair beautifully with other small, gentle species. Great companions include dwarf freshwater shrimp, snails, peaceful corydoras catfish, and small algae-eating otocinclus. Keep them in schools of 6 or more, and avoid large or aggressive fish that may see a nano as a snack. For more ideas, see our roundup of the best schooling fish for freshwater aquariums.
FAQ: Nano Fish
What size tank do nano fish need? Most nano species are happy in 5–20 gallons. A 10-gallon planted tank is a great starting point for a small school, while 20 gallons gives you room for a fuller community.
How many nano fish can I keep together? Most nano fish are schooling species and feel safest in groups of 6 or more of their own kind. Stock gradually and let your filter keep pace as you add fish.
Are nano fish good for beginners? Yes — many are hardy and forgiving once the tank is cycled and stable. The key is patience: add them to a mature aquarium and keep up with regular water changes.
Do nano fish get along with shrimp? Most peaceful nano fish coexist well with adult dwarf shrimp, though very small shrimplets can occasionally become a snack. Plenty of plant cover helps everyone thrive.
Browse our nano fish above and pair them with the right plants, food, and equipment for a thriving micro-ecosystem. Shipping nationwide from Cheyenne, Wyoming — stop by the store or call us at 307-369-1118 with any questions.
