Best food for Tetras (Cardinal, Neon, Ember). 6 picks across budget tiers + feeding frequency + species-specific notes. Micro-omnivore diet, 2 small meals daily, what they eat in 30 seconds.
Tiny floating pellets perfect for nano fish mouths. Color enhancing.
Specifically for small tetras + rasboras. No fillers.
Budget standard. Most tetras accept it readily.
Excellent treat. Helps clear constipation. 2x weekly.
Smaller mysis variety perfect for tetras. Color + protein boost.
Most freshwater fish accept. Crush small for tetras.
Diet type: Micro-omnivore
Frequency: 2 small meals daily, what they eat in 30 seconds
Browse all food buying guides by species, the full Fast Aquatics food selection, or the Tetras (Cardinal, Neon, Ember) care guide for full husbandry.
Single-food diets are the #1 nutritional cause of aquarium fish death after water quality. A pellet-only diet over months leads to vitamin deficiencies (especially HUFA omega-3s for marine fish), reduced immune response, and Hole-in-the-Head disease in cichlids + tangs. The fix is rotating 3-5 different foods across each week.
The protein-fat-fiber-vitamin balance varies dramatically across species. Carnivores (oscars, large cichlids, predator marine fish) need 40%+ protein, low fiber. Herbivores (tangs, mollies, plecos) need under 30% protein, high fiber + algae. Omnivores (clownfish, gouramis, most tetras) sit in between. Misfeeding bloats herbivores + starves carnivores.
For meal-by-meal planning, see our feeding schedules by species, calculator library, and coral feeding guide.
How often should I feed? Once or twice daily for adults; 3-4 times daily for fry. Skip feeding 1 day per week for adult fish - it improves digestion + reduces obesity.
Frozen vs pellet vs live? Use all three. Pellet for the convenience baseline (60-70% of meals). Frozen mysis/bloodworms 1-2x weekly for variety + protein. Live (brine, blackworms, daphnia) for finicky species + breeding conditioning.
Why won't my fish eat the food I bought? 3 reasons: water quality is bad (test first), the fish is stressed from a recent move (give 3-5 days), or the food is wrong for its diet preference. See why is my betta not eating + diagnoser.
How long does food last? Pellets: 12-18 months sealed, 4-6 months opened in dry storage. Frozen: 12 months in deep freezer. Live cultures: indefinite if maintained.
Should I gut-load live food? Yes for finicky species or fry. Gut-loaded brine (with selcon or phyto) is dramatically more nutritious than plain brine. See gut-loading glossary.
Best food guides by species · Feeding schedules · Copepod culture · Phytoplankton culture · Live food culturing · Coral feeding techniques · Q&A library · Glossary