Are you considering getting a new fish but don’t know where to start? Zebrafish may be the perfect choice for you! Zebrafish are small, colorful, and relatively easy to care for. They make great family pets and can bring hours of enjoyment to their owners.

Zebrafish belong to the minnow family and are small freshwater fish native to a river in Eastern India. They have a black and white striped pattern on their bodies, hence the name “Zebrafish”. They can grow up to 2 inches long and live for up to 7 years with proper care.

They are one of the most popular freshwater aquarium fish. They are one of the easiest fish species to care for, and are relatively inexpensive. They are usually kept in community tanks, and are known for being peaceful, docile, and easy to care for. They are very hardy, and can live in a wide range of temperatures. 

Zebrafish are very social animals, and enjoy interacting with other fish in their tank. They are also very curious, and enjoy swimming through their environment. These fish are best in a school of 5 or more fish.

Zebrafish are very friendly and sociable, and enjoy interacting socially with other fish in their home. They are also very inquisitive, and will enjoy learning about their environment.  They will eat a wide variety of foods, including flakes, pellets, and frozen food.

These fish typically cost a little over $2 a fish.

They’re social creatures and do best when kept in groups of at least 6 fish. They can be kept with other peaceful species such as guppies or tetras. It is important to keep the tank clean by doing regular water changes and cleaning the filter.

Zebrafish are a great choice for beginner fish owners because they are hardy and easy to care for. They are also very active and entertaining to watch, making them a great addition to any home. With proper care, these fish can bring years of enjoyment to their owners. So if you’re looking for a pet fish that is easy to care for and fun to watch, consider getting a Zebrafish!

Zebrafish Information

  • Average Length: 1.5 – 2.5 inches
  • Attention Needs: Low
  • Tolerance to Heat and Cold: Yes
  • Good Pet: Yes!
  • Good with Other Zebrafish: Yes
  • Good with Other fish species: Yes
  • Good for Less Experienced Pet Owners: Yes
  • Health Concerns: Intestinal Nematodes and Mycobacteriosis
  • Average Life Span: 5 – 7 years

Physical Appearance of Zebrafish

These fish have either silverfish or golden-looking bodies that are lined by bluish horizontal stripes that run from their head to their tail fin. The male fish tend to have a golden coloration while females look silver-white. It’s also possible to differentiate a male and a female Zebrafish from their body appearance. Females have a bigger round body while males are slimmer with a more elongated body.

There are other color variations such as the Albino, golden without any stripes, and the leopard Zebrafish. Breeders have also bred Zebrafish with veil tailed fins as well as some with extra-long fins. These unique looking strains of Zebrafish are common species in the aquarium hobby. Varieties such as the albino rarely make it in the wild because they become targets for predators.

Temperament of Zebrafish

The Zebrafish are peaceful social fish that enjoy living in groups. If they’re placed alone in a tank, they will likely become stressed and spend most of the time hiding near the substrate in the tank.  They really need a school of other Zebrafish to be happy.

They tend to bite slow fish with long fins but don’t become overly aggressive. They spend their time swimming in the middle to upper parts of the aquarium.

Zebrafish may become aggressive if they’re under populated in the tank. Their targets of aggression are usually lower ranking fish that get nipped on their fins. If you have groups of 6 or more Zebrafish in a tank, predatory behavior is drastically reduced.  

Best Tank mates for Zebrafish

An aquarium filled with different species of fish is a sight to behold. Carefully choosing tank mates for your Zebrafish is an important step to ensuring a peaceful co-existence. When choosing the fish, don’t go for big ones that can harass your Zebrafish. You should also not go for smaller fish that could be preyed on by the Zebrafish. Here is a list of some fish that live well with Zebrafish.

Best Habitat for Zebrafish

Zebrafish originated from Asia’s cold waters and slow flowing rivers. Try to mimic their natural habitat to reduce stress among your fish. Here are some of the requirements for an ideal habitat.

Tank size

The fish are very active and require enough space to swim with their species and other peaceful species. The best size for Zebrafish is a minimum of 10 gallon tank that can hold 6 – 8 fish. The general rule to follow is 1 Zebrafish for every 2 gallons of water.


Drastic changes in temperatures can affect your fish because in their natural habitat, the fish survive in very cold waters. The ideal temperatures for these fish should be kept between 70-74° F, however they will do just fine as high as 90 degrees.

Water Hardness and pH

The water hardness of a Zebrafish tank should be between 5 and12 dGH while the pH should be between 6 and 8.


Zebrafish are active during the day and light is an important aspect for their home. The fish should have light for a minimum of 12 hours in a day.  It is a good idea to buy a lighting timer for your tank so that at night while you are sleeping the light will be off for your fish.


They do well in tanks covered with green plants like the Amazon Sword plant. Java Fern is also a good plant for your Zebrafish because it gives them a home similar to their natural habitat.

Cave looking substrates give your fish a place to rest or hide when they want to. Fine sand is a natural material that is commonly found in the rivers where Zebrafish are most seen.  In addition to the sand, fine pebbles or gravel is good to mimic the rocky feel in rivers.

The complexity of your aquarium usually helps reduce aggressive behavior among fish because they have hiding places and enough distractions. The decorations also improve the aesthetic value of your fish tank.

Tank Maintenance

Each week about 10 percent of water in your fish tank should be changed. We also recommend that every other week you do a 25 percent water change to keep it fresh. Use a siphon to remove any accumulated particles from the substrate at the bottom of your tank.

The pH of your water should be checked daily and adjusted accordingly. Sodium bicarbonate can be used to increase the pH of the water. A water testing kit is a must have so that you ensure the water conditions are safe for your fish.

Filtration for Zebrafish is important because it creates water flow that your fish would have if they were in their natural habitat.

Health Issues

Zebrafish have a very strong immune system and rarely become ill. The fish is however susceptible to intestinal nematodes and mycobacteriosis. Here we’ll cover exactly how to identify the two diseases.


Mycobacteriosis is a serious bacterial infection that can affect freshwater fish. It’s caused by several species of the Mycobacterium group of bacteria, which are often found in polluted water or on decaying organic matter. This infection can be difficult to diagnose and treat, but with prompt attention, it’s possible to save some infected fish.

Symptoms of Freshwater Fish Mycobacteriosis

Symptoms of Freshwater fish Mycobacteriosis include:

  • Cloudy eyes
  • Red streaks and patches on their skin
  • Appetite loss
  • White spots or lesions on their fins, skin and gills
  • Swelling in some areas

These symptoms can appear suddenly or gradually become more pronounced over time. In addition to these physical signs, infected fish can also become lethargic and might hide more than usual.

Intestinal Nematodes

Intestinal nematodes are parasitic worms that live in the intestines of freshwater fish. They can cause a wide variety of health issues for fish, including reduced appetite, weight loss, abdominal discomfort, and even death. Infected fish can also have anemia due to blood loss caused by the parasite.

The most common type of intestinal nematode found in freshwater fish is the roundworm (Acanthocheilonema spirocauda), which typically lives in the small intestine of its host. If your fish has been infected with these parasites, you may notice a white, thread-like worm emerging from their anus or vent.

These parasites can be difficult to treat, but there are several options available. The most effective treatment is an oral medication called levamisole, which kills the parasites and eliminates their eggs from the host’s system. This medication should be given to fish for at least 10 days in order to ensure complete eradication of the parasites. Other treatments include salt baths, copper sulfate, and formalin baths.

Feeding Zebrafish

Zebrafish are omnivorous and will eat meat and vegetables. The most common food for Zebrafish is fish flakes and pellets. The flakes are available in the pet stores and make a delicious meal for most fish.

Your fish will love having live foods such as Bloodworms or Daphnia as a treat once a week. Finely shredded vegetables such as peas, cucumbers, and spinach also help nourish your Zebrafish. In some cases, you may not find live foods in pet stores. If this is the case, you should buy your fish dried or frozen Bloodworms or Daphnia.

Zebrafish should be given only what they can eat within two minutes once or twice a day.  Any more will be overfeeding them, and uneaten food will reduce the water quality in their tank.

Related Questions:

Do Zebrafish Mate?

Unlike most fish species, Zebrafish can pair and remain mates for life monogamously. The fish tend to chase each other around their tank whenever they want to mate. This behavior is mostly seen in the mornings.

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