Datnoid Fish – Care, Facts & Profile

Some fish have an interesting story, others feature cool body parts, while third ones simply look amazing. And datnoid fish are certainly among the most elegant and fashion-friendly additions one can ever add to a tank.

Also referred to as the Siamese Tigerfish, these beautiful creatures feature different base colorations depending on the sub-species, but they all have bold black stripes in common. And this is exactly where they get their nickname from.

Apart from owning tiger-like cool patterns, datnoids are also well-known for being quite brilliant predators. If this sounds as the perfect pet choice for your home, here comes its full care, facts and profile list.

Natural Habitat

The Siamese tigerfish originates from the deep river basins of Thailand, Cambodia, Laos and Vietnam. Being a fairly large type of fish, wild specimens are usually spotted around flooded forests during the rainy seasons.

And with the great demand of so many people wanting to keep them in their aquariums, as well as with the recent deforestations and dam constructions, this species became endangered quite quickly. Sadly, it is now listed as Critically Endangered by the IUCN.


If you want to keep datnoid fish, here are some requirements to consider such as tank size, aquarium filtration, decorations, plants and substrate.

– Tank Size & Filtration

If you are looking to adopt these amazing creatures as pets, you will have to invest into an appropriately sized aquarium. Even though they rarely reach their full size of 18 inches during their life in captivity, they can certainly grow up to even 16 inches sometimes.

Therefore, they require massive spaces to thrive. To begin, a 125-gallon tank is recommended for juveniles, although a 180-gallon tank is probably the very minimum to provide to fully-grown specimens.

Space is vitally important when setting up a home for these amazing predators. Furthermore, this will also probably be your biggest point of one-time cost.

Next, filtration is just as important. Indeed, when setting up such massive aquatic tanks, they simply have to be accompanied by equally powerful and strong filters. Adding to that, datnoids can produce significant amounts of waste, even when compared to their large size.

Most owners nowadays prefer using canister filters, but there are several different choices for you to select from. The main and most important thing is for the filter to get its job done.

And even then, you should still do partial water changes every few days, to ensure that your fish are getting all the best water conditions possible.

Lastly, make sure to setup a tight tank lid at the top as well, to avoid your fish pets jumping out of the aquarium and risking their life.

– Water Parameters

Datnoids are freshwater tropical fish. Therefore, they need pristine clean water conditions and a stable temperature of anywhere between 75- and 80-degrees Fahrenheit.

They prefer spending their lives under neutral pH values, so these should ideally be between 7,0 and 7,5. Water hardness has to be from 36 up to 268 ppm.

Additionally, your huge aquatic pets will basically use all parts of their tank, from top to bottom. They enjoy experiencing mild to medium current movement.

Lightning should be moderate or even dim, and available for a period of 12 hours during each day, followed by 12 hours of darkness.

– Substrate

You can either choose clay or sand for your datnoid pets, although some keepers like to even mix the two for a nicer effect. Tiny gravel is also fine, as long as there are no sharp edges.

– Plants & Decorations

Siamese tigerfish are agile predators, but they also feature quite shy temperaments. Therefore, they require having plenty of hiding spots across their tanks, and for two reasons. Firstly, they need to hide when trying to ambush their prey or live food which will be offered to them.

Secondly, they will frequently want to get away from human looks. This is simply part of their natural instinct, so hiding is an extremely important factor for them.

In order for your aquatic tigers to thrive, you will certainly need to provide enough rocks (as smooth as possible) and tunnels and caves. Furthermore, they greatly appreciate the presence of basically any type of plant.

Therefore, feel free to add as much greenery as you wish, as this will also help with maintaining the water cleaner.

Feeding & Diet

In the wild, these smart predators feed on basically any protein source that moves around them- from smaller fish and their fry to shrimp and various types of insects.

Their natural instincts simply imply that food has to be live, as they naturally enjoy hunting them down before eating them. Therefore, they will happily accept any live meaty treat which you can provide them with.

You can add some smaller fish inside their tank, but you can also offer them bloodworms or brine shrimp. Over time, you can try teaching your predator carnivorous pets to slowly switch to frozen meaty food but be prepared to spend some effort in doing this at a successful rate.

Once this is accomplished, you may also give it a try and start adding some occasional appositely designed pellets or flakes to their diet. These should, however, not make their core diet.  

Juvenile specimens should be fed on a daily basis. Once they reach their adult phase, however, feeding them 2 or 3 times per week should be more than enough.

Tank Mates

Even though they are predators which will happily eat any smaller fish which can fit into their mouth, they are considered to be quite docile and peaceful pets once they get used to their new environment.

Therefore, it is possible to add some tank mates to their aquarium and to have them all living in a friendly community, as long as you choose them wisely.

If you plan on doing so, you should first ensure that your datnoids will not feel threatened before placing new fish species inside their tank.

A group of 5 is considered an amazing starting point to obtain a fully functioning group that will not react negatively to the presence of others. Only once you manage to create such group, you can add some additional fish.

Great solutions include those which are similar in both size and temperaments. Therefore, fish such as catfish, arowanas or bichirs are all good chioces.

These species should go along very well and basically ignore each other once they learn there is no danger. But to obtain that, you should provide a nearly equal number of specimens from all species.


Information on how datnoids reproduce is, sadly, extremely thin. In fact, although there are some indications of successful captive breeding in Vietnam, there have so far been no documented cases of such.

The presumptions are that these fish require extremely deep water to breed, which is incredibly difficult to obtain in aquariums.

Are Datnoid Fish Aggressive?

Even though they are carnivorous predators that are extremely good at what they do, they are actually not aggressive.

Obviously, any fish or other creature which fits into their mouth will get eaten sooner or later, but there is no big concern for them deciding to attack fish which are similar in size. Actually, they make quite the docile tank mates once they get settled in.

How Long do Datnoids Live?

The lifespan of datnoid fish surely follows their large size well. Indeed, these fish tend to survive for about 10 years in captivity, which is quite a significant amount of time.

Some keepers have even reported for their beloved pets surviving up to 15 years, which is terribly similar to their lifespan in the wild.

If you provide your Siamese tigerfish with plenty of space, clean water and a high-quality source of proteins, you can expect them to stick around for a nice part of your life.

How Much Does a Datnoid Fish Cost?

It is hard to define the exact price ranges for these fish, as there are several sub-species available. Also, most of them are caught from the wild rather than captively bred.

Therefore, some smaller types are available at around $100, while larger variations go from $400 up.

When purchasing your datnoid fish, please make sure to compare its specifications and looks with apposite literature or ask an expert for help, as there are sadly multiple cases of mislabeled specimens.

Wrapping Up

If you have the space for it, setting up a huge tank and accommodating some wonderful datnoid fish will surely be a good decision.

These beauties can make any aquarium prettier, as they are certainly among the most elegant yet dazzling species on our planet. Especially if you manage to find the variation with a golden base color.

Datnoid fish may seem overly aggressive at first, but they are actually quite peaceful and docile once you get to know them. And, obviously, once they get to know both yourself and their tank mates.

With some initial investment and appropriate care, these wonderful creatures maybe your companions for a decade.

Datnoids   Updated: April 29, 2021
avatar Hey, I'm Fabian, chief editor at Aquarium Nexus. I really enjoy the aquarium hobby and love sharing my experience with others. If you have any questions feel free to contact me or leave a comment below.

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