Rainbow Sharks, also known as red fin shark or ruby shark, are small tropical freshwater fishes of Thai origin.
They are known for their bright red fins and their territories.
If you want to add color and attitude to your aquarium, this could be the fish for you.
In this article, we will discuss how to take care of them, nutritional needs, sexual you/tank intolerance, livestock and more.
Let’s start with a quick summary before we look at their appearance and compatibility with other fish.
Want more? Download the Rainbow Shark Guide for free to learn all about how to take care of this species.
|Level of care:||Simple/Medium|
|Color shape:||Grey, red|
|Life expectancy:||5-8 years|
|Size:||Up to 6 “|
|Minimum tank Size:||50 gallons|
|Tank Texture:||Tropical freshwater: rocks, caves or plants|
|Compatibility:||Moderate. Start with many other freshwater fish species|
Rainbow Shark Overview
A rainbow shark is a hard-to-hold cyprinid of tropical freshwater. It is suitable for fish breeders who have years of experience and want to expand their aquariums.
They are known for its territorial nature and scarlet-red fins.
Rooted in the warm rivers of Southeast Asia, they are given the name Rainbow Shark as the dorsal fin, giving them the appearance of a shark.
You should expect your rainbow shark to be up to 6 inches long and have a lifespan of 5-8 years.
In terms of costs, you should try not to spend more than 3 dollars per fish and they are available year round.
If you plan on raising the rainbow shark, make sure your aquarium has enough hiding places for them because this will help to reduce their territorial behaviour.
Look at the Rainbow sharks
The Rainbow shark is a dark gray fish with a bright red/orange fin.
They have long, flat belly with pointed snout and erect dorsal fin. The fin itself gives them the appearance of a shark.
Rainbow Shark is a small fish that you should expect to grow up to 6 inches when fully ripe.
It is impossible to determine their gender while they are teenagers. You have to wait until they mature on sex.
As soon as sexual mature women have thicker bodies and men develop small black lines on the caudal fin. While males are thinner, they are usually lighter in color.
A common type of rainbow shark is the albino rainbow shark.
While the albino rainbow Shark retained the red/orange fin, its body was white. It will be similar in size to a traditional rainbow shark and will fit in with some of its features, including its territorial characteristics.
Rainbow sharks are a terrestrial fish that can cause a number of behavioral problems such as aggression and dominance.
This usually happens when they mature. As teenagers, they are shy and spend a lot of time dodging.
They are active swimmers who spend most of their time at the bottom of the tank. Because they are bottom residents, they are called aquarium cleaners because they feed on the bottom of the tank.
You should make sure that your aquarium is long and has enough space for your rainbow shark to swim at the same level.
While peace with fish living in the higher waters, they are known to fight the bottom fish, including their species.
Such behavior can include bites, hunting and collisions from head to tail.
You can try to reduce this behavior by making sure that they are in a large fish tank with low fish/water ratio. You should also make sure that they have lots of hiding places, like caves, tunnels and other empty decorations.
Although they are not known to jump, this is not uncommon. For this reason, you should make sure that your lid fits so that it doesn’t jump out of your aquarium. Jumps usually occur when they are placed in the aquarium for the first time.
Habitat and tank requirements
As mentioned in the overview, Rainbow Shark is a tropical freshwater fish from Thailand.
They are active swimmers, so adults should not be kept in aquariums smaller than 50 gallons. The aquarium also needs a lot of horizontal space. If the aquarium is too short, they are encouraged to become more territorial and aggressive.
If you want to keep lots of rainbow sharks, you should use at least one 125 gallon six feet tank (however, we do not recommend keeping more than a rainbow shark for each aquarium; more on the following).
Due to the territorial nature of the Rainbow shark, you should make sure that your aquarium has many hiding places for it. Think about the cave, the driftwood is processed and the stone.
The dense vegetation also works. Plants can be used to detouch them, reduce conflicts and prevent algae.
The substrate is best suited to sand, as this can be found in the Indigenous rivers of Thailand. Be careful if you want to use gravel because the sharp edges can cut them. If you choose to use gravel, make sure it’s very good.
Finally, you should make sure that your aquarium lid fits fit, you can jump!
You should adhere to the following parameters: 75 °f to 81 °f, pH 6.5-7.5 and the hardness of water from 5 to 11 DH.
With Rainbow Sharks, you have to keep the pH stable. Sudden changes in pH can make them more aggressive than usual.
The light should be kept to the average and the movement of the water must be moderate.
Compatibility and friends
Let me predict this section by saying that the rainbow shark may not be the right fish for you if you are looking for a quiet community fish.
Although they are in harmony with many other freshwater fishes, they are very territorial and this can be overwhelming for more shy species such as the colouring fish and Otocinclus.
As mentioned above in the section about aquariums and habitats, they are happy to own an area of aquariums. It is generally small caves and rocks.
We are sympathetic to all the fish passing through the territory of a rainbow shark! They will be extremely aggressive and will cast out intruders.
Because of their aggression, you need to be careful when choosing tank teammates.
As a rule, they are not aggressive in the rainbow shark-like species. Avoid other fishes living at the bottom, such as cichlids and catfish, as the rainbow shark lives at the bottom of the lake. You should also avoid the same fish, ie H. Red-tailed Shark and Bala shark.
When choosing the lover in the tank, pay attention to the fish in the middle and top of the aquarium.
You also want to choose the fishes that can defend themselves and have a calm but powerful personality. Gourmet species, sea bass, Danios and rainbow fish are all compatible with rainbow sharks.
One compatible little trick you can use is: Make sure the rainbow shark is the last fish placed in your aquarium. This prevented the attempt to ask the entire aquarium and reduce problem areas.
Keep Rainbow sharks with other rainbow sharks
As a rule, it is advisable to keep only one rainbow shark in one aquarium each time. Red-tailed sharks should also be added to this rule.
Like the Royal Gramma, rainbow Sharks will not tolerate living in their own way.
In the wild, they often live a lonely and very territorial lifestyle. There is simply not enough space in a normal fish tank and the larger rainbow shark does not stop hunting the smaller rainbow sharks until it kills them.
This territorial nature develops with age. So if you get two young rainbow sharks, they can be very suitable, but their relationship will quickly deteriorate as they mature.
If you insist on keeping more of a rainbow shark, follow these instructions:
- You should keep a group of them (5 or more). In this way, the dominant rainbow shark must hunt many fishes.
- Never just keep two rainbow sharks.
- If you are about to introduce more than one rainbow shark, make sure that each child has at least one metre of a separate area.
Diet and diet
As mentioned in the overview, Rainbow Sharks are omnivorous, meaning they eat both plants and meat.
In the wild, they often feed on rotting plants, algae, insect larvae, and small pieces of meat that they find on the river, such as B. Mammals.
They are not picky eating and will consume almost everything. On condition it sinks to the bottom of the tank!
This is good news if you want to feed the rainbow shark in the aquarium. You will eat flake food, frozen food, food capsules, vegetable and food living without any complaints.
They should set the goal of maintaining diverse diets and give them plenty of food sources, just like what they will eat in nature. For example: algae (tablets or wafer plates), insect larvae, crustaceans (frozen or alive) and animals. To keep their diet diverse, you can also give them a variety of vegetablesThe spinach, lettuce, zucchini and peas. This keeps the immune system strong.
If you want to make sure that their red/orange is brilliant, they should be fed regularly with raw and frozen meat. Frozen and shrimp blood worms are good.
These are all the more important things for juvenile rainbow sharks. If you want your kittens to grow up with bright colors, make sure their diets are varied and never get too limited. Lack of variation can lead to poor growth disorders and color manifestations.
In terms of feeding regimen, you should aim to spread food for 2-3 sessions a day. The total feeding time should be about 5 minutes.
If there is food left after this time, let them eat too much and this will affect your nitrogen cycle.
Rainbow Shark Farming
In the wild, rainbow sharks tend to mating from Oct to Nov when they reach maturity in terms of sexuality. However, the exact month can be affected by changing the season and depends on the length of the day and the temperature.
Note: You can assume that if the fish is under 4 inches long, it is still not sexually mature.
The Rainbow shark is spawning by laying eggs. The female lays eggs and the male fertilizes them by spraying eggs with their spleen. From here, the eggs hatch during the week.
Unfortunately, raising the rainbow shark in an aquarium is a big challenge and we have no success stories yet.
Again, this is most likely due to their aggressive nature and territory in a tight environment.
Most of the rainbow sharks you offer for sale are breeding in commercial farms in South East Asia.
Is the rainbow shark suitable for your aquarium? (Abstract)
Rainbow Shark is a great addition to your community, as long as it is not kept along or a fish look similar.
Although they are known to be territories, you should not have too many problems with them, as long as you give them an appropriate aquarium environment and adapt to their companion.
You’re a beautiful fish and a positive swimmer. So you will enjoy watching them in an aquarium.
They are good eating people and eat a variety of foods, including tablets, flakes and frozen meat.
If you want to feed the rainbow shark, you should also make sure that you have experienced fish farming, as these fish are usually not suitable for beginners.
Do you keep rainbow sharks? Let us know in the comments below…