What Type Of Goldfish Eat Duckweed?

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Duckweed is a small, floating plant that can be an important part of a goldfish’s diet. But not all types of goldfish eat duckweed. Some goldfish may pick at it, while others may ignore it altogether. So what type of goldfish eat duckweed? Read on to find out.

What Is Duckweed?

Duckweed is a small, free-floating aquatic plant that’s commonly found in ponds, streams, and wetlands. It’s often mistaken for a type of algae, but it’s actually a flowering plant. Duckweed is made up of several small, green leaves that measure just 1 to 3 millimeters in size. It’s often referred to as a “weed” because it’s considered an invasive species in some parts of the world.

What Is Duckweed Used For?

Duckweed has a few uses. It’s often used as a natural fertilizer or soil amendment in gardens. It can also be used to help reduce algae growth in ponds and aquariums. In addition, many people use duckweed in their goldfish tanks as a supplemental food source.

Do Goldfish Eat Duckweed?

Some goldfish will eat duckweed, while others may ignore it altogether. It depends on the type of goldfish and its individual preferences. For instance, some fancy goldfish varieties may pick at it, while a single-tailed fish like the common goldfish may ignore it.

Types Of Goldfish That Eat Duckweed

Some of the most common types of goldfish that eat duckweed include:

  • Fancy goldfish like the lionhead, fantail, and oranda
  • Nymph goldfish like the shubunkin
  • Sarasa goldfish
  • Bubble-eye goldfish
  • Pearlscale goldfish
  • Ranchu goldfish
  • Ryukin goldfish

Types Of Goldfish That Don't Eat Duckweed

Not all types of goldfish will eat duckweed. Here are some of the most common types of goldfish that usually don’t eat it:

  • Common goldfish
  • Comet goldfish
  • Slim-bodied goldfish
  • Veiltail goldfish
  • Bristlenose goldfish
  • Blue orfe goldfish

Why Do Goldfish Eat Duckweed?

Goldfish may eat duckweed for a variety of reasons. For one, it’s a good source of nutrition. Duckweed is rich in protein, vitamins, and minerals, which can help goldfish stay healthy. In addition, it’s an easy source of food. Since duckweed floats on the surface, it’s easy for goldfish to spot and consume.

How To Feed Goldfish Duckweed

If you want to feed your goldfish duckweed, it’s best to start with a small amount. Since duckweed multiplies quickly, it’s easy to overfeed your goldfish. Start with a small handful of duckweed and see how your goldfish respond. If they seem to enjoy it, you can slowly increase the amount you feed them.


Duckweed can be an important part of a goldfish’s diet. Some types of goldfish, such as fancy goldfish, nymph goldfish, and sarasa goldfish, will eat duckweed. Others, such as common goldfish, comet goldfish, and veiltail goldfish, may not eat it. When feeding your goldfish duckweed, it’s best to start with a small amount and increase it gradually.

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