Different Species Of Goldfish – The Ultimate Guide To Varieties, Care

Have you ever walked into a local fish store and felt completely overwhelmed by the sheer variety of shimmering scales and flowing fins? You are definitely not alone.

Most of us start our journey with a simple vision of a “goldfish,” but we quickly realize that different species of goldfish offer vastly different personalities, care requirements, and aesthetic appeal.

In this guide, I promise to walk you through the fascinating world of these aquatic treasures, from the hardy pond-dwellers to the delicate, exotic fancies. You will learn exactly how to choose the right fish for your specific setup and how to keep them thriving for years to come.

Understanding the Two Main Categories of Goldfish

Before we dive into specific breeds, it is vital to understand that the hobby generally divides different species of goldfish into two main camps: the “Slim-Bodied” (or Streamlined) and the “Fancy” (or Egg-Shaped).

Identifying which category your favorite fish falls into is the first step toward success. This distinction determines everything from the tank size you need to the type of filtration and decor you should choose.

Slim-Bodied Goldfish (The Athletes)

Slim-bodied goldfish are the closest relatives to their wild ancestors, the Prussian Carp. They are built for speed, endurance, and extreme hardiness.

These fish are characterized by their long, torpedo-like bodies and single tail fins. Because they are incredibly fast swimmers and can grow quite large, they are often better suited for large ponds than indoor aquariums.

Fancy Goldfish (The Showstoppers)

Fancy goldfish are the result of centuries of selective breeding. They have round, egg-shaped bodies and usually possess double tail fins (caudal fins).

These varieties are generally slower, more delicate, and require more specialized care. Because they aren’t as agile as their slim cousins, they are the perfect choice for indoor tanks where they don’t have to compete for food against faster swimmers.

Exploring the Most Popular Different Species of Goldfish for Beginners

When you are just starting out, you want a fish that is forgiving of “newbie” mistakes while still being beautiful. Let’s look at some of the most iconic different species of goldfish you’ll encounter.

The Common Goldfish (Carassius auratus)

The Common Goldfish is the classic “carnival fish,” but don’t let that fool you into thinking they are easy to keep in small spaces. These fish are remarkably tough and can live for over 20 years if given the right environment.

They typically come in bright orange, red, or white. Because they can grow up to 12 inches long, I always recommend at least a 55-gallon tank for a single fish, though a pond is much better.

The Comet Goldfish

Comet Goldfish look very similar to the Common variety but feature much longer, flowing, deeply forked tails. They are the sprinters of the goldfish world.

If you enjoy watching active, energetic fish, the Comet is a great choice. Just remember that their speed means they need plenty of open swimming space and high-oxygen water.

The Shubunkin Goldfish

Shubunkins are essentially the “calico” versions of the Comet. They are prized for their nacreous scales, which give them a beautiful mix of blue, red, orange, and black spots.

The blue coloration in Shubunkins is particularly sought after by hobbyists. Like Comets, they are exceedingly hardy and thrive in outdoor ponds where their colors can truly pop under natural sunlight.

Diving Into the World of Fancy Goldfish

If you have a medium-to-large indoor aquarium, fancy goldfish are likely where you will want to focus your attention. These fish have distinct personalities and often recognize their owners!

Oranda Goldfish: The Wen-Bearing Beauty

The Oranda is one of the most recognizable different species of goldfish due to the “wen” or hood on its head. This fleshy growth can eventually cover the entire head, giving them a very regal appearance.

The “Red Cap Oranda” is a fan favorite, featuring a pure white body with a bright red wen. Keep in mind that the wen can sometimes overgrow and obstruct their vision, requiring a bit of extra observation from you.

Fantail Goldfish: The Perfect Entry-Level Fancy

If you are transitioning from slim-bodied fish to fancies, the Fantail is your best bet. They are the hardiest of the egg-shaped varieties and can handle slightly more varied water conditions.

They have a classic double tail and a high dorsal fin. They aren’t as prone to the swim bladder issues that plague some of the more “extreme” fancy shapes, making them very rewarding for beginners.

Black Moor: The Telescope-Eyed Favorite

The Black Moor is famous for its velvety black scales and protruding, telescope-like eyes. Despite their “spooky” look, they are gentle and slow-moving fish.

Because their eyes are delicate and their vision isn’t great, you must be careful with tank decor. Avoid any sharp rocks or plastic plants that could snag or injure their eyes.

Ranchu and Lionhead: The Dorsal-Less Wonders

Ranchu and Lionhead goldfish are unique because they lack a dorsal (top) fin. This gives them a distinctive, waddling swimming style that many keepers find adorable.

The Ranchu is often called the “King of Goldfish” in Japan. They require excellent water quality and a diet high in protein to maintain their rounded shape and healthy head growth.

Choosing the Right Setup for Different Species of Goldfish

One of the biggest mistakes I see is putting different species of goldfish in a tank that is too small. Goldfish produce a significant amount of waste (ammonia), which can quickly become toxic.

Don’t worry—getting the setup right isn’t hard once you know the “Golden Rules” of goldfish keeping.

Tank Size and Volume

For slim-bodied fish, think big. I generally suggest 20 to 30 gallons for the first fish and 10 to 15 gallons for every additional fish. However, for Comets and Commons, a 75-gallon tank is the realistic minimum for long-term health.

For fancy goldfish, you can be a bit more conservative. A 20-gallon long tank is a great starting point for a single Oranda or Fantail. The “long” part is important because it provides more surface area for oxygen exchange.

Filtration: The Heart of Your Aquarium

Because goldfish are “messy” eaters and high-waste producers, your filter needs to be a workhorse. I recommend a filter rated for double the size of your tank.

For example, if you have a 30-gallon tank, use a filter rated for 60 gallons. Look for a combination of mechanical filtration (to catch debris) and biological filtration (to house the beneficial bacteria that process toxins).

Substrate and Decor

Goldfish are natural foragers; they love to sift through the bottom of the tank looking for scraps. Fine aquarium sand is the best substrate because it passes safely through their gills.

If you prefer gravel, make sure it is either very large (too big to fit in their mouths) or very small. Medium-sized gravel can get stuck in a goldfish’s throat, which is a stressful emergency for both you and the fish!

Feeding and Nutrition for Optimal Health

Feeding your goldfish is about more than just flakes. To keep the different species of goldfish healthy, you need to provide a varied diet that prevents digestive issues.

Fancy goldfish, in particular, are prone to buoyancy problems. This often happens when they gulp air at the surface while eating floating flakes.

• High-Quality Sinking Pellets: This should be the staple of their diet. Sinking pellets prevent air gulping.
• Deshelled Peas: Once a week, feed your fish boiled, deshelled peas. This acts as a natural laxative and keeps their digestive tract clear.
• Live or Frozen Foods: Bloodworms and brine shrimp are excellent “treats” that provide essential proteins and minerals.
• Gel Foods: Many expert keepers swear by gel foods like Repashy, as they are incredibly easy for the fish to digest.

Compatibility: Can Different Species of Goldfish Live Together?

This is a question I get asked all the time! While most goldfish are peaceful, compatibility is about swimming speed and competition for food.

You should generally not mix slim-bodied goldfish with fancy goldfish. The fast-moving Commons and Comets will zoom around the tank and eat all the food before the slow-moving Orandas or Ranchus can even get a bite.

Furthermore, the frantic movement of the faster fish can stress out the delicate fancies. It is always best to keep “like with like.” Pair Black Moors with other telescope varieties or Ranchus with Lionheads.

Frequently Asked Questions About Goldfish Species

Q: How long do different species of goldfish actually live? A: With proper care, slim-bodied goldfish can live 20-30 years. Fancy varieties typically live 10-15 years, though some well-cared-for fancies have reached their 20s!

Q: Do goldfish really only grow to the size of their tank?
A: This is a dangerous myth. While their external growth might slow down in a small tank, their internal organs continue to grow, leading to a painful and premature death. Always provide ample space.

Q: Can I keep goldfish with tropical fish?
A: It is not recommended. Goldfish are cold-water fish (ideally 68°F to 74°F), while tropical fish need much warmer water. Additionally, goldfish produce too much waste for most sensitive tropical species.

Q: Why is my goldfish changing color?
A: This is very common! Many different species of goldfish change color as they age due to genetics, diet, and lighting. A black fish turning orange is a frequent occurrence in the hobby.

Q: Do goldfish need a heater?
A: Usually, no. If your home stays at a consistent room temperature, they will be fine. However, a heater set to a low “safety” temperature can help prevent drastic fluctuations during winter.

Conclusion

Exploring the different species of goldfish is one of the most rewarding journeys you can take in the aquarium hobby. Whether you choose the elegant, waddling Ranchu or the lightning-fast Shubunkin, you are bringing a piece of living history into your home.

Remember, the key to a happy goldfish is space, clean water, and a proper diet. Don’t be afraid to start with a hardy variety like a Fantail as you build your confidence.

By following the advice in this guide, you are well on your way to creating a thriving aquatic environment. Happy fish keeping!