Research fish species and protein requirements before purchasing food. Bottom feeders have downturned mouths, mid-feeders have forward-pointing mouths. Surface feeders have upturned mouths and cluster to surface. Food should float, be small enough to fit in mouth, and contain 5-40% protein
Oto cat reaches maximum 2 inches in length. Prefers heavily planted aquarium with slightly acidic to alkaline water. Thrives in temperatures between 68-79 degrees Fahrenheit. Best kept in schools of 4 or more
Over 12,500 species exist in aquatic environments worldwide. Found in freshwater, estuaries, coastal lagoons, and caves. Divided into planktonic and benthic forms. Make up about 10% of freshwater invertebrates globally
Originates from South America's Orinoco and Amazon river basins. Maximum size is 1.5 inches with life expectancy of 5-10 years. Features bright blue stripe from nose to tail, white belly, and red tail stripe. Can be kept in groups of at least half-dozen as peaceful shoaling species
Cardinal tetra reaches 2 inches in size and lives up to 4 years. Originates from South America's Orinoco River to Rio Negro tributary. Found in shaded rainforest areas with soft, acidic water (pH 5)
60-liter aquarium needed for free swimming and algae grazing. Temperature should be 22-28°C for optimal health. pH range of 6.5-7.5 is ideal for feeding and reproduction