I am planning to set up a 40 gallon(breeder) fish tank to house easy beginner level fishes. I want to go with small fishes. Below are the max combination i came up after researching.

  • 6 - neon tetra
  • 2 - dwarf gourami
  • 6 - Boraras brigittae
  • 6 - Harlequin Rasboras
  • 6 - Zebra Danios
  • 6 - Chili Rasboras
  • 6 - Corydoras Catfish
  • 5 - Cherry Shrimp
  • 2 - Nerite Snails

Someone kindly suggest whether it is practical or not or what can be done better. I want to start with neon tetra mostly and the tank setup will be evolved around that. i will not add all this at one go. But this is my plan on the long run.

  • 1
    The first thing you should know is how to cycle your tank. It's the big mistake most beginners do and only few pet shops teach about. Also that sounds like a lot of fish for a single tank. Please keep in mind that you're dealing with living creatures that like to reproduce.
    – Elmy
    Oct 14, 2022 at 12:20
  • @Elmy that was helpful. It changed my presepctive. I would also like to know about the maintenance process too. If you have any resources for that would be helpful. As I said I will add fish gradually. The above described numbers are maxed and probably will never reach. Also i expected that without breeder tank they wouldn't breed.
    – varuog
    Oct 16, 2022 at 19:41


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