Small Freshwater Aquarium Fish Species. This small freshwater fish is strikingly colorful and interesting to watch making it a favorite among nano aquarium owners. Pea puffer fish also known as the dwarf puffer fish is a freshwater fish that originates from India.
Tetra fish are one of the most popular groups of fish for personal freshwater aquariums. It is rare that different fish are kept in small aquariums usually these are monospecific reservoirs containing a maximum of 5-10 inhabitants. Instead of laying eggs they give birth to tiny versions of themselves.
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Neon Tetra is a very famous freshwater aquarium fish. Normans Lampeye Killifish is another species of killifish that can thrive in a small freshwater tank. The fish looks like a small panda with an average size of about 2 to 25 inches. These active little shoaling fish are renowed for their incomparable coloration displaying rich reds deep blues and vibrant yellows when comfortable in their home.
