Guppies
Guppies--particularly males--are popular with beginners. They have colorful and eye-catching tails, and are great fun to watch.
Tetras
Tetras are one of the most exemplary aquarium species. They are schooling fish, which means you should keep 4 or 5 of them in a 3-gallon fish tank.
Otocinclus
Otocinclus are small, bottom-dwelling fish that can live comfortably in a 3-gallon aquarium. They eat algae and food decay, too, helping to keep the tank clean.
Zebra Danios
This hardy species is a great choice for beginners with small fish tanks.
Other Recommendations
Some other recommended fish for a 3-gallon tank are:
- Salt & Pepper Cory
- White Cloud Minnows
- Dwarf Shrimp or Cherry Shrimp
- Small snails like Ramshorn Snails
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