However, these colorful fish are quite happy on their own, so choose a betta if you want one relatively large fish for a small tank. 2. Neon Tetra. Neon tetras are small, active fish with bright ...

Fish that should not be kept in small tanks include goldfish, guppies/mollies (unless you can guarantee you only have one sex), or cichlids. Small ornamental shrimp are also a good candidate for a ...

Mollies. Mollies are small fish with peaceful natures that can grow to be 3 - 4 inches long. It’s best to keep them in a tank that holds at least 20 gallons of warm water kept at a pH of 7.0 ...

Guppies are a small, pretty species of fish that are extremely popular for home aquariums. ... Tanks. Guppies are small, but they’re active and need plenty of space to swim around.

If you want more than one fish, a five-gallon tank could be a suitable home for a few guppies. Here’s a list from r/Aquariums of easy-to-care-for beginner species , including tetras, small ...

Whether you have guppies, goldfish, neon tetra, mollies or any other small fish in your aquarium, we have a list of fish food packs that will be suitable for your pet fish. Have a look at this ...

Nantawat Chotsuwan /Shutterstock 2. They're Small and Cheap . Guppies don’t take up a lot of space, so you don’t need a huge aquarium. The rule of thumb is one guppy per gallon of water.