Cold-water fish make great starter pets for kids, while freshwater fish require a little more upkeep. 2 inches. They’re small, peaceful fish and best kept in a peaceful community tank with other peaceful fish who aren’t big enough to eat them. In it, you’ll learn about each of the best fish for small tanks. They aren’t picky eaters, but they can be quite shy. 1. Call 1-877-367-4377 to order! Harlequin Rasbora. It is native to the Pacific Ocean and lives in sheltered lagoons and inshore reefs. As bottom feeders, these unusual fish feed on algae and other types of fish food. As a fish owner, I can tell you there’s a lot more that goes into the care of fish than you might think. 10 gallons. It is covered in tiny spikes which inject toxic mucus into anything or anyone who tries to handle them. Although these fish can be kept in a cool aquarium, the water temperature should not drop below around 72° for long periods. Simply look through this list, and pick your favorites! These species require separate tanks. Tank Setup. These fish can tolerate temperatures as cool as 65 degrees and as warm as 75. Adult Size. All of the freshwater nano fish below are a joy to keep, and very convenient due to their size. Either kind of fish will brighten your home. Live Freshwater Fish shipped right to your door at the lowest prices online only at family-owned and operated That Fish Place - That Pet Place. The Harlequin Rasbora is a tiny fish that’s a ton of fun to watch. Good tank mates are guppies, tetras and smaller barbs. These small fish are native to Jiangxi river in South China and can grow up to 9 cm in length. It is quite obvious if you buy 1-2” (2.54-5.08 cm) fish breeds since then you will hardly need a 5-10 gallons aquarium for them to dwell. You’re going to want some purple in your tank–and the coolest way to put purple in your tank is to get the #2 coolest saltwater fish for beginners–the orchid dottyback, pseudochromis fridmani. These spectacular looking fish are the most beautiful in the ocean. Therefore, be smart to fulfill your wish and include some cute and small freshwater fish in your little aquatic family. Empire Gudgeons are not commonly seen for sale in fish stores, but you can sometimes find specimens online. It can be found with a gray body with whit speckles, but some have unique orange fins. Most fish in the trade are wild-caught, and they usually need a diet of live or frozen food to thrive. Remember: Big fish eat little fish, so whenever you stock a tiny fish like the Zebra Danio you have to be careful. This fish does well in a planted ten-gallon tank, but will need at least five other companions, as it is a schooling fish. Minimum Tank Size. Types of pet fish fall into two main categories: cold-water or freshwater. This dottyback is commonly aquacultured and will be a great addition to any tank about 30 gallons or larger. Life happens, you get busy and those fun little fish tend to take the back burner. Cute Little Fish for Small Tanks With a lifespan of 8 years, Hillstream Loaches can live comfortably in a 45-gallon fish tank. Fun Fact: You can also keep fish in their tank, but make sure the fish are small, because bigger fish will snack on the shrimp.