The Ultimate Guide To Fresh Water Dragon Fish

Fresh Water Dragon Fish Aka Violet Goby | Fishkeeping Adventure
fresh water dragon fish, aka violet goby
Gobioides broussonnetii – Gobie violet, By Cedricguppy – Loury Cédric (Own work)
[CC BY-SA 4.0], via Wikimedia Commons

A dragon fish is a type of freshwater fish that is native to the Amazon River Basin. It is a member of the Characidae family and is closely related to the piranha.

The dragon fish is a predatory fish that feeds on other smaller fish. It has a long, slender body and is covered in scales. This fish is a popular aquarium fish and is kept by many hobbyists. It is also used in the traditional medicine of some cultures.

A freshwater fish is a fish that lives in water that has a low salt content. The vast majority of fish live in freshwater, but many species live in salt water.

Freshwater fish are generally smaller than saltwater fish, and they have different habitats. Some freshwater fish live in rivers and streams, while others live in lakes or reservoirs.

A dragon fish is a mythical creature often described as a giant serpent or sea monster. Dragon fishes are said to be ferocious and dangerous, and they are often associated with death and destruction.

However, some people believe that Dragonfish are natural creatures and are often used as symbols of evil. Some people also use dragon fish myths to warn children about the dangers of being alone in the water.

Fresh Water Dragon Fish Overview

The Fresh Water Dragon Fish is a predatory fish that can grow up to 3 feet in length. It is found in freshwater rivers and lakes in Asia. The Fresh Water Dragon Fish preys on small fish, crustaceans, and insects.

Some examples of freshwater dragon fish include the Asian Arowana, the Chinese dragon fish, and the South American dragon fish. These fish are all known for their long bodies and bright colors, making them popular among aquarium enthusiasts.

Some of the other common names for these species include water dragons, catfish, and pleco. All of these fish are members of the family Ictaluridae, which is classified under the order Perciformes. They are all air-breathing fish.

The Fresh Water Dragon Fish is a popular aquarium fish. This fish has a characteristic dragon-like appearance with a long snout and elongated fins.

Its scales are smooth, and its body is green or yellowish-green with black spots along the back. The Fresh Water Dragon Fish is a solitary fish and is not aggressive towards other fish. However, it can attack anything that it perceives as a threat.

Did you know Fresh Water Dragon Fish is an important food source for larger predators such as the Tiger Shark, Barracuda, and Goliath grouper?

In addition, the Fresh Water Dragon Fish can also be sold fresh or frozen and is commonly used in Chinese cuisine. Its fins are also used in traditional medicine to treat various ailments such as pain from arthritis.

How To Care For Freshwater Dragon Fish

Dragon fish are typically hardy fish that thrives in freshwater that is a bit salty. This fish species requires clean water with weekly changes of about 10% to 15% to keep it happy and healthy. It also helps to have good filtration to maintain the aquarium and get rid of any toxic substances.

As for the water temperature, you need to ensure that it ranges between 77 degrees F and 83 degrees F. Ideally, it should not be kept in an environment with extreme temperature fluctuations as this can lead to a weakened immune system and loss of appetite.

They thrive well in hard tap water with a PH of between 7.5 and 8 PH. This makes them quite unique compared to other fish species that do well in low PH.

Something else to keep in mind is the size of the aquarium. Because of its size, you will need at least 25 gallons of space to accommodate your dragon fish. If you intend to other fish in the aquarium, then you will need more space.

Types Of Fresh Water Dragon Fish

Fresh water dragon fish come in a variety of types to choose from. Discussed below are some of the best freshwater dragon fish examples.

1. Asian Arowana

Size: 35 inches

Temperament: Aggressive

Mode of feeding: Carnivorous

Level of care: Moderate

Temperatures: 72-82 degrees

The Arowana is a tropical dragon fish that is large and sleek to fit in any aquarium. To swim on the water surface, the fish has mandibular barbels. The Asian Arowana lives for up to ten years in favorable climatic conditions.

The fish has a bony tongue; hence it is commonly referred to as bony tongued fish. However, it has other names, including barramundi, Kelesa, and Saratoga. It belongs to the family Osteoglossidae hence a dragon fish.

Unfortunately, the Asian Arowana dragon fish is endangered, and its conservation is highly rated. The fish is known to be a dragon fish because it resembles a Chinese dragon.

These fish feed on other small fish, shrimps, insects, worms, or crustaceans, and they, therefore, exhibit carnivorous mode. As pets, they can be fed with fish pellets or flakes. The young one is fed three times daily while the adults only eat once per day.

The arowanas should not be overfed since this leads to overgrowth and tainting of the aquariums and this can reduce their quality. They are aggressive to any threat, and they are streamlined. Plus, they grow up so fast in covered aquariums.

Their age matters when it comes to tank sizes, especially the width of the tank. They should be transferred from smaller tanks to larger ones as they grow and increase both in size and weight.

For instance, a younger Arowana will grow well in a 20-gallon long tank. However, the adult ones will thrive in up to 180-gallon long tanks.

Asian Arowana may also be found in natural waters besides being kept in aquariums as pets. Examples of Asian arowanas include golden arowanas, also called fish of good luck, and silver Arowana originating from the Amazon basin.

You are, therefore, advised to change the filters of the tank each day. The aquarium water should also be changed to help regulate the temperatures and raise healthy species. Even though this species requires little care, a complete lack of care will lead to diseases and stress hence death.

2. Violet Goby

Size: 12 inches

Temperament: Aggressive

Mode of feeding: Scavengers

Level of care: High

Temperatures: 76-78 degrees

The violent gobies are small dragon fishes. As a result, they are eaten by other fishes such as flatfish, cods, and haddock. Hence, they play an essential role in the food chain.

Their small size makes them unattractive to owners of tropical fish, and this makes them not common in aquariums. Violet Gobies eat from substrates and they mainly feed at night or in darkness.

Some live in rivers or even swamps, and others occupy shallow water areas in large water bodies or muddy estuaries. This species is found on most continents in the world. They have menacing teeth and this makes them scavengers feeding on algae on the debris.

Violet gobies exhibit symbiotic relationships where they mutually interact with other species, such as shrimps. Here, they create burrows that benefit both species. The other relationship is a parasitic symbiosis where the violet gobies remove parasites from some fish species.

A single species of violet goby requires a tank that is 4 feet long. The violet goby cannot be crowded in a standardized tank and it is not advisable to keep them with other species. This is because they are incompetent and tend to be eliminated by nature easily.

The fish tends to hide and comes out only when there is little disturbance. The fish feeds on small fish if not well fed, and this makes it a predator scavenger. The typical examples of violet goby include platies, glassfish, and guppies.

Many aquarium diseases attack the violet goby, for instance, fin rots and columnaris. The diseases are caused by bacteria and spread throughout the body of the fish. You will need antibiotics to treat this disease.

In this fish species, one male is responsible for the spawning of three females. These females require a lot of space to hide their young ones while the males only look for a space to build a temporary or permanent nest.

In violet goby, spawning is triggered by giving the fish animate meaty foods and reduction of the water ph. The males protect the eggs after spawning, which hatch after two days.

3. Deep-Sea Dragonfish

Size: 30-40 inches

Temperament: Aggressive

Mode of feeding: Carnivorous

Level of care: High

Temperature: 70-73 degrees

The deep-sea Dragonfish is also known as the black Dragonfish. It is a large, slender, and eel-like fish with overgrown teeth. The deep-sea Dragonfish (Draconetta tamarensis) is a small, dark-colored dragonfish found in the deep waters of the Atlantic and Pacific oceans.

It is one of the few fish that can live and thrive in the deep sea, where light does not reach, and conditions are harsh. The deep-sea Dragonfish has large eyes and a long, sharp tooth that protrudes from its lower jaw.

They have a photophore, features that are common to the stomiidae family. This gives it another name, barbeled Dragonfish.

It also has long, barbel-like feelers on its chin that it uses to detect food. The deep-sea Dragonfish is a predator that feeds on small fish, squid, and crustaceans. It can swim rapidly through the water and has a powerful bite that can inflict severe damage on its prey.

Because of its ability to survive in harsh conditions and feed on large prey, the deep-sea Dragonfish is an important part of the marine ecosystem.

The deep-sea Dragonfish is not currently threatened by extinction but is vulnerable to pollution and habitat destruction. It is also susceptible to being caught in commercial fishing nets. If the deep sea dragonfish becomes threatened or endangered, it will be essential to protect its populations and habitats.

The deep-sea Dragonfish was first described by German naturalist Johann Reinhold Forster in 1781. Its name comes from the Latin word Draco, meaning “dragon.”

Bioluminescent characteristics are an adaptation to residing deep in waters. They have small light-emitting organs that light in the dark to attract prey. The bioluminescent features also act as communication skills between the species.

Generally, the body emits both red and blue lights. The blue lights are perceived by the eye, and this makes communication easier among the species.

4. The Lionfish

Size: 6-12 inches

Temperament: Aggressive

Mode of feeding: Carnivorous

Level of care: High

Temperature: 80 degrees

The lionfish is an excellent example of the Pterois genus beautiful but dangerous predator that is native to the Indian and Pacific Oceans. It has a reddish-brown body with white spots and long, venomous spines that can cause severe injuries to humans.

Lionfish are also one of the more popular aquarium fish species because of their vibrant colors and exciting personalities. Lionfish (Pterois) is a genus of venomous fish that is found in the Indo-Pacific region and is the only extant member of the family Pteroinae.

Pterois species have extensive venomous spiky fin rays. The potency of their venom makes them good predators. The venom is a mixture of steroidal hormones, neurotoxins, and enzymes. The venom glands are located in the lower jaw on either side of the fish’s open mouth.

The lionfish is a good aquarium fish because it is a hardy, aggressive feeder that can be kept in a small tank with other peaceful tropical fish. It will consume most types of food, including flakes, frozen foods, and live brine shrimp or crabs.

The lionfish should not be kept with any type of bottom feeder as their venom can be fatal to these fish. When buying a lionfish, make sure to get a healthy specimen as they can be susceptible to disease. Lionfish should not be kept with any type of other fish that they may consider as prey, such as gouramis or cichlids.

Lionfish live in warm, coastal waters around the world. They are often found near coral reefs and mangroves, where they can find plenty of food. They are a common target for anglers, who catch them in large numbers and sell them to restaurants and fish markets.

The lionfish is an expert at camouflaging itself among the coral reefs and preys on small fish and invertebrates. It is an invasive species that has become a significant threat to the coral reefs of the world. It feeds on small fish and invertebrates and can devastate populations of coral if left unchecked.

Although the lionfish is beautiful, it can be dangerous. This fish is known to attack humans, so it is essential to keep a distance when you encounter one in the wild. If you see a lionfish in your aquarium or pond, it is best to remove it using a net or fish trap.

5. Bowfin Fish

Size: 24 – 36 inches

Temperament: Non- aggressive

Diet: Carnivorous

Level of care: Low care

The bowfin fish is a freshwater fish that is found in North America. The fish is known for its long, snake-like body and for its ability to breathe air. This fish is an aquarium fish that is a bottom feeder and should be kept in a tank with plenty of plant life to graze on.

This fish can get large, reaching up to 18 inches long. It has a has a long, cylindrical body and a large, flat head. Hence, you will need adequate space in your aquarium to accommodate it.

The fish is greenish-brown in color, with a dark stripe running along its sides. The bowfin fish is a predatory fish that is known for its ability to survive in waters with low oxygen levels.

The bowfin fish is a predatory fish, and its diet consists of other fish, amphibians, and invertebrates. The fish is known to have a powerful jaw and sharp teeth, which it uses to catch its prey. The bowfin fish is also known for its ability to swim quickly and maneuver in tight spaces.

In North America, bowfin fish is considered a popular sport fish. This is because of its fighting ability. Furthermore, it is considered an excellent food source. However, this fish can contain high levels of mercury and it is advisable to limit your consumption of bowfin fish.

In addition, the fish has been used in biomedical research due to its unique physiology and anatomy. The bowfin fish is currently listed as a threatened species by the IUCN.

This species is vulnerable to the effects of climate change and is pretty sensitive to changes in water quality. It can also be impacted by pollution.

Frequently Asked Questions

What fish can you put with dragon fish?

Some aquarists believe that dragon fish are compatible with other fish that have similar care requirements, such as barbs and silversides. Other aquarists believe that dragon fish is incompatible with other fish because of their aggressive behavior.

However, it is essential to ensure that the tank mate you choose for your dragon fish is large enough not to be eaten by it. Some other things to consider when choosing compatible fish for a dragonfish tank include water, temperature, and pH.

How much does a dragon fish cost?

A dragon fish can cost anywhere from $10 to $20. Some people may charge more for a dragon fish, but it depends on the person selling it. Some factors that could affect the cost include the size of the fish and the color. Additionally, the person selling the fish may be able to negotiate a higher price if they are able to show that the fish is healthy and has all of its fins.

How big do freshwater Dragonfish get?

The average freshwater Dragonfish grows to be about 2-3 feet long. However, some individuals have been known to grow up to 5 feet in length. However, these fishes remain smaller while in captivity.

Generally, the larger the Dragonfish, the more it weighs. The average weight for a freshwater dragonfish is around 4-5 pounds. However, some have been recorded to weigh up to 10 pounds. The heaviest recorded freshwater Dragonfish weighed in at 13.2 pounds.

How long can a dragon fish live?

A dragon fish can live for up to ten years. However, in captivity, they typically only live for two to three years. Wild dragon fish usually live longer than those in captivity.

This is due to the fact that they have more space to swim and are not confined to a small tank. In addition, wild dragon fish have access to a greater variety of food than those in captivity.

Finally, wild dragon fish are not typically subject to the same level of stress as those in captivity. All of these factors can lead to a longer life.

What do freshwater dragon fish eat?

Some say the best thing to feed a freshwater dragonfish is live food, such as brine shrimp, bloodworms, or daphnia.

However, others say they will accept most types of feed, including pellets, flakes, and live fish. Some people also recommend giving them fresh vegetables or fruits.

Finally, some people say that they don’t have to give their freshwater dragon fish anything special, and they will eat what is available in the aquarium.

It is important to make sure that the fish have plenty of clean water to drink and swim in, as well.


The freshwater dragon fish is a popular aquarium fish that is native to the rivers and streams of Southeast Asia. It is a peaceful fish that is relatively easy to care for, and it is a popular choice for beginner aquarists.

The freshwater dragon fish is a hardy fish that can adapt to a wide range of water conditions. It is a carnivorous fish that feeds primarily on aquatic invertebrates. Generally, it is a good choice for aquarists who want an aquarium fish that is capable of providing plenty of entertaining visuals and tasty meals.

Overall, the freshwater Dragonfish is a well-rounded aquarium fish that provides aquarists with years of enjoyment when cared for properly. Whichever dragon fish you choose, you just need to ensure that you provide them with clean and properly-aerated water at all times.

 I hope that this article makes your choices simpler among the many options.


Edwin is a passionate fishkeeper since he was a kid. He loves caring for the fish and sharing his ideas about fishkeeping with family and friends. He is the owner of Fishkeeping Adventure.

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