With the prices for threadfin rainbow fish coming down and the availability of them increasing, there has been a sudden increase in their popularity within the fish keeping hobby recently.
This has resulted in a number of people reaching out to ask a number of different questions about keeping threadfin rainbow fish in their tanks due to most people being inexperienced with the species.
Although threadfin rainbows do have a reputation for being a sensitive fish that can be difficult to keep, they are generally easy to care for and will thrive in a tank that you have planned around the species rather than adding them to an existing tank setup.
One of the things that we see people getting wrong time and time again is that they will make mistakes with the tank mates in their tank.
Due to this, we wanted to publish our own article going over this list of threadfin rainbow tank mates to try and help as many of our readers as possible.
The Best Threadfin Rainbow Tank Mates!
We have our list of the best threadfin rainbow tank mates below to try and offer some recommendations for our readers and we will cover each species in more depth throughout the article:-
- Asian Rummynose
- Sparkling Gourami
- German Blue Rams
- Clown Killifish
- Pygmy Cory
- Cherry Shrimp
Depending on your aquarium setup and the size of your tank, you can often add multiple species from the list above to your tank with your threadfin rainbow fish.
There are also a number of other fish species that can work well as threadfin rainbow tank mates too but for the most part, we would recommend you stick to the species on this list, especially if you are new to the fish keeping hobby.
Tetras are a species of freshwater fish that come in a wide variety of colors, shapes and sizes.
The Neon Tetra is probably the most popular fish species within the hobby and these make an excellent tank mate for threadfin rainbow fish.
Tetras are generally peaceful fish that like to shoal so you will often see them swimming in groups in your tank.
Tetras are also a relatively small fish so they will not compete with your threadfin rainbow fish for food or space within the tank.
Guppies are another popular freshwater fish species that make an excellent tank mate for threadfin rainbow fish.
Guppies come in a wide variety of colors and patterns so they can add a splash of color to your tank.
Guppies are generally peaceful fish but they can be known to nip at the fins of other fish species so you will need to keep an eye on them when you first introduce them to your tank.
Guppies are also livebearers so if you are not careful, you can end up with a lot more guppies than you started with!
Rasboras are a peaceful fish species that come in a wide variety of colors.
They are a relatively small fish so they will not compete with your threadfin rainbow fish for food or space.
Rasboras are a schooling fish so they will often be seen swimming in groups in your tank.
There are a number of different types of rasboars that can work well in a tank with your threadfin rainbow allowing you to get a range of colors from a single type of fish.
Danios are a hardy fish species that come in a wide variety of colors and patterns.
Danios are a schooling fish so they will often be seen swimming in groups in your tank and usually need to be kept in a group of at least six.
The low price and wide availability of danios make them a popular option within the fish keeping hobby and their small size and easy going nature makes them ideal threadfin rainbow tank mates for many tank setups.
The Asian Rummynose is a peaceful fish species that can work well in a tank with your threadfin rainbow fish.
Depending on your location, it may be difficult to easily find Asian Rummynose fish and even if you do find them in a local fish store, they may be expensive relative to the other fish featured on our list.
Due to this, it may be better to order them online if you are set on the Asian Rummynose rather than trying to hunt them out in the local fish stores in your area.
We are huge fans of keeping Sparkling Gourami in a tank with threadfin rainbow fish due to the relativley similar shape of the fish keeping things similar but the difference in color offering plenty of variety at the same time.
Although some people do keep a single Sparkling Gourami in their tank, we always recommend that you keep at least four fish in the tank to make sure that they are happy.
Unlike some other species of Gourami, the Sparkling Gourami will max out at a length of 1.5 inches making them easy to keep in your tank with your threadfin rainbow without you having problems with the fish.
German Blue Rams
Many people overlook German Blue Rams as a tank mate for their threadfin rainbow due to being cichlids but German Blue Rams are one of the most peaceful species of cichlid available.
Their beautiful colors make them an excellent fish to keep and their popularity has been increasing in recent years so they are usually easy to find and much cheaper than they once were too.
Ideally you should be looking to keep a pair of German Blue Rams if you do choose this tank mate for your threadfin rainbow though as the fish will be far happier in a pair rather than being a single German Blue Ram.
Although most killifish are too aggressive to be kept in a tank with threadfin rainbow, the clown killifish are a calm and relaxed killifish that is becoming increasingly popular within the hobby.
The unique colors of clown killifish make them a great addition to your tank and their personality make them an ideal threadfin rainbow tank mates in most aquarium setups.
Just like some of the other fish on this list, clown killifish can be difficult to find in some areas so shopping online for them may be the best option for you.
Although minnows are a basic fish that are often overlooked, they can make excellent tank mates for your threadfin rainbow and we would highly recommend that any beginners to the fish keeping hobby consider them for their tank.
Not only are minnows easy to find and cheap but they are also very easy to care for too making them a very beginner friendly tank mate for your threadfin rainbow.
We absolutley love the pygmy cory catfish and although other types of cory can work as a tank mate for your threadfin rainbow, we usually would recommend that you just go with the pygmy cory if possible.
As you can probably tell by the name, pygmy cory catfish are a very small fish and this makes them an excellent tank mate for your threadfin rainbow as they will not outgrow their tank.
Not only are pygmy corys a great tank mate for your threadfin rainbow but they are also very easy to care for and very cheap to buy too making them a great fish for beginners to the hobby.
Our regular readers will know that we are huge fans of keeping shrimp in community tanks, especially cherry shrimp so no list of tank mates would be complete without some species of shrimp on it.
Cherry shrimp make an excellent tank mate for your threadfin rainbow as they are very peaceful and will not compete with your fish for food.
They are also very easy to care for and very cheap to buy too making them an excellent choice for beginners or people on a budget.