The best fish for 20 gallon tank
There are different sizes and various shaped fish tanks that you can use to set up your home Aquariums. Some people like very bigger and wider tanks while some people looking for tanks like 10 – 20 gallons. So in this article, I am going to share some details about the best fish for a 20-gallon tank.
When thinking to have a fish tank, like a 20-gallon tank, The first two questions come into your mind are,
- what are the best tropical fish for a 20-gallon tank?
- what are the unique fish that good for a 20-gallon tank?
So I am writing this post to answer all these questions for you. I hope this post will helpful for you.
The best fish varieties for your 20-gallon tank
The tank size is a really important fact when considering having a fish tank. With the size of the fish tank, you have to consider how to set up it.
There are various smaller fish types we can add in our fish tanks, Between them, there are some smaller fish varieties that are really good fish for a 20-gallon tank. There are so many facts you need to consider when selecting a fish for your 20-gallon tank.
You must know how long will be the selected fish grow up and will this tank capacity harmful for their day to day life and the normal behaviours. The next thing is the fish you are going to add should be good community fish types to stay together.
Same as any other fish tank, The environment of the fish tank should be good with the fish you are going to add.
When considering 20-gallon aquarium fish compatibility, these fish are a good selection for your small fish tank.
- Platy fish
- Dwarf Gourami
- Fancy Guppy
- Swordtail
- Harlequin Rasbora
- Molly Fish
- Neon Tetra
- Cory Catfish
- Zebra Danio
- Otoconclus
Here I have listed out 10 best smaller fish types that you can easily add into your 20-gallon fish tanks. Most of the fish in the above list is also the best fish for planted tanks.
When u selecting a fish for your 20-gallon aquarium, You also need to consider the number fish for your aquarium. Because an aquarium always needs a comfortable living space for your pet fish.
Now let’s talk about the basics details for each fish and how it suits your awesome 20-gallon fish tank.
Platy fish
This fish is a good fish for your freshwater fish tanks. The Platy fish is one of a livebearer fish. The most nicer thing is this fish is very easy to care for.
I have written about a complete care guide for this fish. you can read it by clicking here.
The Platies are very active. They have various color rangers in their bodies. This makes this little fish really beautiful. There are so many different platy variations too.
The best match is having one male fish for every two female platyfish. This fish is also one best fish for a planted tank. I will list down basics details as points for this fish below.
- Care level: Beginner
- Max size: 2.5 inches
- Lifespan: 3 – 5 years
- Diet: Omnivore foods
- Temperament: Peaceful
Dwarf Gourami
This is a very popular gurami fish type in the freshwater fish world. They are very attractive and will be a great choice for your 20-gallon tank.
This fish has awesome color patterns in their body, Normally this good fish to add but there can be semi-aggressive some times. It depends on their condition.
Here the basics and important points for Dwarf Gourami
- Care level: Easy
- Max size: 3.5 inches
- Lifespan: 5 years
- Diet: Omnivore foods
- Temperament: Peaceful and semi-aggressive
Fancy Guppy
The Guppies will be another good selection for your fish tank. Guppy fish is always being a good fish for freshwater tanks. This another livebearer fish type.
There so are so many Guppy types you can find in the freshwater aquarium. This fish is can find in many countries and got love from aquarium lovers.
Guppies are always very easy to care for and very easy to breed. The male fish is really beautiful than the female Guppy fish. This fish also a good planted tank fish.
Here the basics and important points for Guppy fish
- Care level: Easy and Beginner
- Max size: 0.7–2.4 inches
- Lifespan: up to 2 years
- Diet: Omnivore foods
- Temperament: Peaceful
Swordtail fish
The Swordtail fish is another famous and well-known livebearer fish of freshwater fish keeper. This fish also one of the best fish for a planted tank.
This fish is good for an aquarium beginner. Because Swordtails are also easy to care for. This fish has a thin and long tail which makes the fish look attractive.
There are several types of Swordtail fish we can see. Here I will add some basics details for Swordtail fish
- Care level: Easy and Beginner
- Max size: 5 inches
- Lifespan: 3-5 years
- Diet: Omnivore foods
- Temperament: semi-aggressive
Harlequin Rasbora
This fish is a popular Rasbora fish. Harlequin Rasboras are loved to live as a group. They are small yet very beautiful and good community fish.
This fish is easy to care for. Having a group of them will make your 20-gallon aquarium more attractive.
This fish good to keep with other smaller fish types. They will be looks nicer in Planted tanks also. Here the basics you should know about Harlequin Rasboras.
- Care level: Easy
- Max size: 1.5-2 inches
- Lifespan: 5-8 years
- Diet: Omnivore foods
- Temperament: Peaceful
Molly Fish
Molly is another most famous freshwater livebearer type in the aquarium world. This fish is very common in most of the countries.
There are several types of Molly fish variations we can see in freshwater aquariums. caring for Molly fish is also easy. So the fish is good for beginners also.
They are good for planted tanks and act as good algae eating fish. The balloon molly is very popular since of its unique shape.
Here the basics and important points for Guppy fish
- Care level: Easy and Beginner
- Max size: 3-4 inches
- Lifespan: 5 years
- Diet: Omnivore foods
- Temperament: Peaceful
Neon Tetra
Another awesome looking attractive smaller Tetra type.
The neon tetra is one of the most famous fish in Planted tanks. They have a blue and red line with shiny colours which make them really attractive.
This fish is a best-buying fish in the USA market as well as in most of the other countries. So they are easy to find in most of the countries.
This fish is good for schooling. The tank mates should be the same size smaller fish types.
The Important points about Neon tetra.
- Care level: Easy
- Max size: 1.5 inches
- Lifespan: 8 years
- Diet: Omnivore foods
- Temperament: Peaceful
Cory Catfish
This is unique bottom feeder types freshwater fish that match perfectly into your 20-gallon fish tank.
This fish is from the Corydoras fish family. There are many different Corydras types. This fish is some time behave as a cleaner for your tanks.
These fish love to eat leftover foods in fish tanks. So there will be additional benefits by adding them into your 20-gallons fish tank.
The Important points about Cory catfish.
- Care level: Easy
- Max size: 2.6 inches
- Lifespan: 5 years
- Diet: Omnivore foods
- Temperament: Peaceful
Zebra Danio
Most common and most famous Danio fish from the freshwater Danios. This fish is very small in size but looks really good.
The Zebra Danio is also ave some variations as longer fins, etc. This acts as a highly active fish in your aquarium.
If you having a planted tank, This is one of the best fish for you. Caring for this fish is not a hard task. Most of the time Danios live in the bottom level of the fish tanks.
Basics about Zebra Danio
- Care level: Easy
- Max size: 2.4 inches
- Lifespan: 5 years
- Diet: Omnivore foods
- Temperament: Peaceful
Otoconclus catfish
Another good fish for your 20-gallon tanks. This fish smaller in size and they love to eat algae in tanks. So the Otoconclus is also a good algae eater fish.
This fish also one type of fish in the catfish variations. Their common look is like a pleco.
The Otoconclus catfish is also the best choice for a tank like a 20-gallon tank. They love to live in the bottom area of the tanks.
Basics about Otoconclus
- Care level: Easy
- Max size: 2 inches
- Lifespan: 3-5 years
- Diet: Omnivore foods
- Temperament: Peaceful
Conclusion
This post basically targeted 10 types of freshwater fish that you can as the best fish for a 20-gallon tank. All of these fish are very common in most of the countries and easy to find.
I have shared basic details you should know such as Care Level, Temperament, diet and Lifespan with the max growing size for each 10 fish types.
I hope you got some ideas and knowledge from this post. If so. please share this with friends also.
