For a stunning display with minimal effort, keep a school of 6 or more neon tetras in a 15-gallon planted aquarium. These American livebearers boast a range of vibrant colors and fin shapes ...

while a larger 15- or 20-gallon tank only needs cleaning once or twice a month. Among the best betta fish tank options is the Tetra ColorFusion Aquarium. This 20-gallon betta fish tank with filter ...