Pregnant Glass Catfish: Signs and How to Care

Pregnant glass catfish do not usually happen in captivity, but it is possible to breed them in your aquarium. Today, we will cover the signs of pregnant glass catfish and how to care for them. So if you’re interested in this topic, let’s check it out right now!

How to Tell if My Glass Catfish is Pregnant?

A glass catfish on black background

It is easy to know if glass catfish are pregnant. If this fish is pregnant, the abdomen is protruding and boxy. The following are other reliable methods to determine whether these fish are ready to spawn:

  • It is easy to notice one black spot on their abdomen when their pregnancy progresses.
  • Many killed fish keepers reported that they noticed their pregnant female catfish struggled to swim.
  • When glass fish are pregnant, they usually get more attention from males in the same aquarium.
  • Pregnant glass catfish will usually prepare a birthing place for their young when close to giving birth (also called nesting).

How to Care for Pregnant Glass Catfish?

Caring for glass catfish is not an easy task. Unfortunately, any change to your tank carries the risk of causing diseases that can even be fatal to your pregnant fish. Don’t worry! With the proper guide, you can care for your fish effectively.

Specific Diet

It is best to give your pregnant catfish live foods, such as brine shrimp, larvae, and worms. Also, you can supplement them with commercial fish food, such as flakes and pellets. Combining them will keep these pregnant fish healthy.

You should feed pregnant catfish at least once per day. Giving small amounts of food is best to ensure they can finish in approximately three minutes.

Overfeeding fish can lead to ugly consequences, and the same goes for underfeeding them.

Get the Right Waterflow

The water flow is one of the things to consider when setting up your aquarium for pregnant catfish.

You should adjust the water flow to mimic the currents in their natural habitat. The good news is that getting this right does not require any unique tool.

Pick the Proper Substrate

Choosing a suitable substrate is essential for fish and their fry survival. You should not select something with sharp edges since they will injure your pets.

Instead, you should consider common substrates, such as small gravel and sand.

Maintain High Quality Of Water

Keeping the nitrate and ammonia levels under control is vital. High nitrate and ammonia levels can leave pregnant fish prone to disease from the community.

Get the Right Water Parameters

These fish prefer to act in the middle layer of your tank.

The water temperature should be around 76°F to 80°F, water hardness ranging from 8 to 12 KH is the best, and the optimal pH level will range from 6.5 to 7.

Choose The Right Tank Mates

Forming the proper environment for your pregnant glass catfish includes picking the appropriate fish species.

If you keep glass catfish with other species that share temperaments and care needs, you will notice they are eating more and more actively.

Maintain Tank Water Purity

The most common way to maintain your tank water purity is to do water changes frequently. Thanks to that, bacteria will not have an appropriate environment to grow and thrive.

Another great way is to add live plants to your tank. You might consider common plants like Java fern, Java moss, and Hornwort.

Get Appropriate Aquarium Size

These pets require enough space to hide and swim. So we recommend buying a community aquarium of at least thirty gallons.

A big enough aquarium also enables your glass catfish to interact with other species, such as Cory catfish, but feel safe as well.

Always avoid the smaller tanks as they might increase the risk of diseases and make your fish feel unsafe.

two glass catfish


Is It Possible for Glass Catfish to Get Pregnant in an Aquarium?

Yes, glass catfish can get pregnant in a freshwater tank. Yet, it rarely happens in captivity. The reason is that they have tough conditions you must adhere to.

After buying these catfish, they can produce eggs yearly if you give them the proper conditions and care. They breed during the peak of the rainy season.

Are Ghost Catfish Really Catfish?

The answer is Yes. Yet, unlike other catfish, they are highly active swimmers.

What Should I Feed Glass Catfish Fry?

Once your glass catfish’s eggs hatch, you should feed their fry brine shrimps to remain healthy. Other meal options can be small insects and larvae.

 What Is the Average Size of a Glass Catfish?

The average size of Glass Catfish is around 4 to 6 inches. Its size will depend on its genetics and the quality of care you provide.

Average Size of a Glass Catfish

Is It Okay To Raise Transparent Catfish Alone?

It is possible to keep these catfish alone in your tank. But for the greatest results, we advise keeping them with other fish with similar needs and temperaments.

Mollies, Swordtail catfish, tetras, and marbled hatchets are great examples of proper tank mates.

How Should I Care for The Eggs Of My Glass Catfish?

Once your catfish has spread their eggs in your tank,  taking care of them is up to you. You should start by moving their eggs from your community tank to one breeding tank.

If these eggs are present with other fish in the same tank, they will be a delicious meal for the bigger fish.

The Bottom Line

Hopefully, this article has helped you answer some questions about pregnant glass catfish and how to care for them properly. If you have any other queries, feel free to leave them in the comments. Thank you for reading!