Ruby Tetra | Red Dwarf Tetra The Ruby Tetra is an absolute stunning nano fish with hints of reddish orange color. They truly stand out in a planted aquarium. It is important to provide hiding places for these fish as they can get stressed out. We recommend rock and driftwood to create caves and crevices. Please Note: All fish shipments have a 100% Live Arrival Guarantee when shipping with Overnight (1 Day) option. All other options void our Live Arrival Guarantee for fish. The Ruby Tetra will reach sizes of about 1 inch. They are pretty peaceful. Although, we would not recommend keeping them with shrimp. They prefer small live foods so baby shrimp would become an easy target. The scientific name for the Ruby Tetra is Axelrodia riesei. We feed our Ruby Tetras a mix of frozen foods including daphnia, baby brine and cyclops. We occasionally feed them Northfin Veggie. Our Tank Parameters Ph: 6.2 to 7.5 Gh:8 to 16 Kh: 4 to 7 TDS:180 to 250 Temp:70 to 74 Tank Recommendations Leaves: Indian Almond or Guava Wood: Mopani or Malaysian Cones: Alder Cones Other: Active substrate to lower pH