What Are Some Ideal Stocking Ideas for a 37 Gallon Fish Tank?

If you’ve just set up your 37-gallon fish tank, you may be wondering about the best stocking ideas to create an attractive and healthy aquatic environment. The good news is, there’s a wide variety of fish and aquatic plants that’ll give your tank the pop of life you’ve been dreaming of.

In this article, we’ll discuss several fish species that are suitable for a 37-gallon tank, as well as additions such as invertebrates and plants to create a well-rounded underwater paradise.

So, are you ready to discover brand new aquatic companions and plants for your 37-gallon tank? Just keep reading, and you’ll learn how “fishy friends” of various shapes and colors can thrive together and make your fish tank the envy of aquatic enthusiasts.

Ideal Fish Species for a 37-Gallon Tank

Community Fish

  • Tetras: One option is to host a beautiful school of tetras. There are several species of varying sizes and colors available, like Rummy Nose Tetras and Neon Tetras.
  • Rasboras: Also consider the small and peaceful Rasboras, such as Harlequin Rasboras or Chili Rasboras.

Semi-Aggressive Fish

  • Tiger Barbs: Another option is to add a lively school of Tiger Barbs to your tank, but be cautious when mixing them with other fish due to their semi-aggressive behavior.
  • Electric Blue Acara: For a pop of color, Electric Blue Acara can be striking if properly managed and given ample hiding spots.
See also  Will Mystery Snails Escape Your Aquarium? Learn How to Keep Them In

Bottom Dwellers

  • Cory Catfish: Add some charming Cory Catfish to your tank to keep the bottom of your tank clean and add variety.
  • Bristlenose Plecos: Complete your aquatic wonderland with the fascinating Bristlenose Plecos that can grow up to 4-5 inches and help control algae in the tank.



Shrimp can add diversity and excitement to your tank. Cherry Shrimp, Amano Shrimp, and Ghost Shrimp are all great additions. Be cautious with compatibility if you have any aggressive fish in your tank.


Introduce Mystery Snails, Nerite Snails or even Malaysian Trumpet Snails to control algae growth and add a unique touch to your underwater community.

Aquatic Plants

Foreground Plants

Carpeting plants such as Dwarf Hairgrass or Monte Carlo will create an aesthetically pleasing landscape that also provides cover for shy fish.

Midground Plants

Include bushy plants like Java Fern or Anubias, which will provide refuge and resting spots for your fish.

Background Plants

Tall plants like Amazon Swords or Vallisneria create a natural backdrop and contribute to the overall health of your aquarium.

Now that you have some ideas about which fish, plants, and invertebrates will work best in your 37-gallon tank, let’s wrap things up by answering some common questions regarding tank setup and maintenance.


  • How do I set up my 37-gallon fish tank?
    • Start by cleaning the tank, adding substrate, and arranging decorations such as rocks and driftwood. Then, add live plants, fill with water, and set up the filter and heater.
  • What temperature should I maintain in the tank?
    • Aim for a temperature range of 72-78°F, depending on the specific requirements of the fish species.
  • How often should I clean the tank?
    • Regularly check water parameters and perform partial water changes (20-30%) every two weeks, or more often if needed.
  • How many fish can I add at a time?
    • Introduce fish slowly, adding a few at a time to avoid creating an imbalance that leads to dangerous spikes in ammonia and nitrite.
  • Do I need special lighting for my planted tank?
See also  Is a 20 Gallon Tank Enough for Angelfish to Thrive?


Creating an impressive 37-gallon fish tank is an enjoyable and rewarding process. By selecting a balanced mix of fish species, invertebrates, and plants, you can create a fascinating underwater world tailored to your preferences. Just remember to be patient and don’t overcrowd your tank. Taking good care of your aquatic community will ensure their health and well-being, ultimately leading to a more satisfying tank-keeping experience. Happy fish keeping!

Leave a Comment