If you love the idea of having pet fish but don’t want the hassle of constant maintenance, choosing a long-living, low-maintenance species is the way to go. Some fish can live for decades with minimal care, requiring only a clean tank, proper diet, and basic equipment like a filter and heater. Here are seven fish that will be with you for years, without feeling like a full-time job.

1. Goldfish

Goldfish are one of the most popular pet fish, known for their hardiness and long lifespan. With proper care, these fish can live for 10 to 20 years, and some have even exceeded 40 years. They require a spacious, well-filtered tank since they produce a significant amount of waste. Contrary to popular belief, goldfish bowls are not suitable for them. They thrive in larger tanks or ponds where they have ample space to swim. Goldfish are social and can live in groups, making them a charming and low-maintenance addition to any home.

2. Betta Fish

Bettas are small, colorful fish known for their striking fins and easy care. They typically live for 3 to 5 years, but with excellent care, some can reach 7 years. These fish are hardy and can tolerate a variety of water conditions. While they don’t require a large tank, a heated, filtered environment will keep them healthiest. Males should be housed alone due to their aggressive nature, but they can recognize their owners and even interact with them. A simple feeding routine and occasional water changes are all they need to thrive.

3. Oscar Fish

Oscar fish are intelligent, interactive, and can live for 10 to 20 years. They grow fairly large, reaching up to 18 inches, so they need a spacious tank of at least 50 gallons. While they are low-maintenance, they do have a carnivorous diet that requires protein-rich foods. Oscars are known to recognize their owners and can even be trained to perform simple tricks. They are relatively hardy but require stable water conditions. With minimal but consistent care, they become fascinating, long-term pets that are more interactive than most fish.

4. Koi Fish

Koi fish are a fantastic option for those with an outdoor pond, as they can live anywhere from 25 to 50 years, with some surpassing 100. They require very little maintenance beyond basic feeding and seasonal care. Koi are highly adaptable to different water conditions and can survive in colder temperatures. Their stunning colors and graceful swimming make them a favorite among fish keepers. Since they can recognize their owners and even eat from their hands, they offer a rewarding and long-lasting pet experience with minimal upkeep.

5. Plecostomus

Plecostomus, or “plecos,” are well-known for their algae-eating abilities, helping to keep tanks clean with little effort from their owners. They can live for 10 to 15 years and require a well-maintained tank with ample hiding spots. Although they start small, many species can grow over a foot long, so a large tank is necessary. Plecos are peaceful fish that coexist well with other species. They primarily eat algae but should also be given sinking pellets and occasional vegetables to stay healthy. Their low-maintenance nature makes them a great addition to any aquarium.

6. Corydoras Catfish

Corydoras catfish are small, peaceful bottom dwellers that can live up to 15 years with proper care. They are highly social fish and thrive when kept in small groups. Since they are scavengers, they help clean up leftover food, reducing tank maintenance. They do best in well-filtered, stable water with a sandy or soft substrate to protect their sensitive barbels. Feeding them sinking pellets and occasional treats like bloodworms will keep them healthy. Their friendly nature and low-maintenance care make them perfect for beginner and experienced fish keepers alike.

7. Angelfish

Angelfish are elegant and hardy fish that can live for 10 to 15 years when properly cared for. They require a well-filtered tank with at least 20 gallons of space, though larger is better. Angelfish are social and do well in community tanks with other peaceful species. They eat a variety of foods, including flakes, pellets, and frozen treats, making feeding simple. They prefer stable water conditions and occasional water changes to keep them thriving. Their graceful swimming and striking appearance make them a favorite for those who want a long-lived, low-maintenance fish.

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