Nano Fish
Shop Nano Fish

Nano Fish

Small freshwater fish for planted nano aquariums, with species-specific tank and group guidance.

Shop Nano Fish ↓
Live Arrival Guarantee

Every order backed by our DOA promise.

Overnight Shipping

Fish require overnight shipping for safe arrival.

Carefully Packed

Insulated boxes with heat or cool packs.

Ships Mon–Wed

Scheduled around livestock safety windows.

45 products

Quick Comparison

Compare Your Options

Scroll to see all columns

Fish TypeBest ForImportant Note
TetrasMid-water schoolingMost do best in groups of 8–10+
RasborasPlanted nano tanksShrimplets may be at risk
Pygmy CorydorasBottom and lower-midwater activityKeep in larger social groups
OtocinclusMature planted tanksNeed established biofilm
Pea PuffersSpecies-focused setupsTerritorial and not shrimp-safe
White CloudsCool-water communitiesPrefer cooler temperatures

Have Questions?

Quick Answers

What size tank do nano fish need?
It varies by species. Some work in 5–10 gallons, while active schooling species may need 15–20 gallons or more.
Can nano fish live with shrimp?
Many species can coexist with adult shrimp, but shrimplets are vulnerable to most fish. Pea Puffers are not shrimp-safe.
Do all nano fish need tropical temperatures?
No. White Cloud Mountain Minnows and Rainbow Shiners prefer cooler water than many tropical community fish.
Do nano fish need to be kept in groups?
Many do. Tetras, rasboras, Corydoras, and rainbowfish usually show better behavior in proper groups. Check each species page for the recommended number.
When do nano fish ship?
Fish ship Monday through Wednesday via Overnight / Next Day Air.

About This Collection

Nano Fish

Nano fish are small freshwater species suited to compact planted aquariums, but tank size still depends on adult size, activity level, group size, and temperament. This collection includes schooling fish, small bottom dwellers, algae grazers, and specialty species such as Pea Puffers that require more specific care. Popular choices include Celestial Pearl Danios, Ember Tetras, Pygmy Corydoras, and small rasboras. Some species prefer cooler water, some need larger groups, and some are territorial, so always match the species to the tank rather than assuming every small fish belongs in a 5-gallon aquarium. Fish ship Monday through Wednesday via Overnight / Next Day Air and are covered by our Live Arrival Guarantee.

Overnight Shipping

Fish ship overnight for the safest arrival.


Shop Related Categories

RasborasPeaceful nano schooling fishBrowse → TetrasColorful planted-tank schoolersBrowse → CorydorasSocial bottom-dwelling catfishBrowse → Shrimp Tank PlantsCover and grazing surfacesBrowse →