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## Is a 40 gallon tank a good size?

**Yes, a 40 gallon tank is good**. Generally, these tanks are for beginner aquarists who have lower maintenance requirements, like people with freshwater and saltwater fish-only aquariums. The best thing about this size of the tank (aside from the low cost) is that they’re widely available at pet stores or on Amazon!

## How many guppies can I put in a 40 gallon tank?

To avoid this, you should learn about proper aquarium stocking. A good rule that has always worked for me is the **1 guppy per gallon rule** or the 1 inch of guppy fish per gallon rule.

## Can 2 goldfish live in a 40 gallon tank?

The Size Of The Fish

As a general rule of thumb, each goldfish needs about 10 gallons of tank space. So, **if you’re planning on keeping small goldfish, you could potentially keep 4-5 of them in a 40-gallon tank**. But if you’re planning on keeping larger goldfish, you might only be able to keep 3 in that same tank.

## What fish can you not put together?

**Cichlids, certain species of sharks, loaches, knife fish, mormyrids and other territorial fish** do not share space well with members of their own kind or closely related species.

## Why are 40 gallon tanks called breeders?

A 40-gallon breeder aquarium is a fish tank with specific dimensions. Unlike other 40 gallon tanks that have a more rectangular base, breeder tanks have a bottom that’s more square. **It’s designed for breeders to easily access their fish due to the lower profile**.

## How many neon tetras can I put in a 40 gallon tank?

…

Aquarium Size Guide For Neon Tetras – How Many Neon Tetras Can I Put In A Gallon Tank?

Tank Size (in gallons) | Number of Neons |
---|---|

29 | 15 to 18 |

30 | 15 to 18 |

40 | 20 to 26 |

## Can 3 male guppies live together?

**You can keep only male guppies in a tank**. However, when you keep only male guppies in a tank, you will see a lot of aggression and bullying among them. To spread out the aggression, it is recommended to keep at least 6 male guppies in a male-only guppy tank.

## What size tank do tetras need?

Housing Requirements for Tetras

Most tetras can be kept in aquariums of **10 to 20 gallons**, but larger tanks are easier to take care of and give them more room to swim. They do best in schools of 6 or more and will be less stressed and show their best colors in a well-decorated aquarium.

## How many gallons do bettas need?

Bettas need an aquarium with **at least 3 gallons** (11 liters), a filter and a heater. Set up their new home at least one day before they arrive.

## What size tank do I need for 3 goldfish?

The majority of people simply don’t have enough space for the tank size that would be need for that number of goldfish. For example, even three common goldfish would need a tank size of **54 gallons** (30 gallons + 12 gallons for the second fish + another 12 gallons for the third fish).

## How many fish can I put in a 30 gallon tank?

This rule has many variations, but the most common version holds that you should stock 1 inch per 2-5 gallons of water. This means a 30-gallon tank could hold **6 to 15 1-inch fish**, or 2 to 4 3-inch fish.

## How many fish can I have in a 36 gallon tank?

**One Inch Per Gallon**

The most widely known rule for stocking a tank is the one inch of fish per one or two gallons of water rule.

## How many neon tetras can I put in a 40 gallon tank?

…

Aquarium Size Guide For Neon Tetras – How Many Neon Tetras Can I Put In A Gallon Tank?

Tank Size (in gallons) | Number of Neons |
---|---|

29 | 15 to 18 |

30 | 15 to 18 |

40 | 20 to 26 |

## How many cardinal tetras can I put in a 40 gallon tank?

How many cardinal tetras in a 40-gallon tank? You could potentially fit **up to 20 cardinal tetras** into a 40-gallon tank, although a school of 10-15 tetras would be ideal for this, just so they have enough space.

## How many Glofish Can I put in a 40 gallon tank?

What is this? That being said, here’s how many Glofish is accepted for one to keep per gallon of water: Glofish thrive in a group so it is recommended to have **at least 5** from the same species.

## 40 Gallon Fish Tank: Everything You Need To Know – Everything Fishkeeping

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## 40 Gallon Breeder Aquarium Stocking Options: What Fish Can Be Kept Together? – YouTube

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## 40 Gallon Fish Tank Dimensions And Tips | Fishkeeping Folks

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## How Many Goldfish in a 40 Gallon Tank?

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## How Many Fish Can You Keep In A 40 Gallon Tank? – Tiny Underwater

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- Summary of article content: Articles about How Many Fish Can You Keep In A 40 Gallon Tank? – Tiny Underwater A 40 gallon breeder tank can hold 1-2 medium sized fish or 20-25 small fish like neon tetras. For saltwater aquariums, a 40 gallon tank can hold … …
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## How Many Fish in a 40 Gallon Tank? Best Stocking Ideas

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## 40 Gallon Aquarium Guide: Best Fish, Setup Ideas and More… | Fishkeeping World

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## How many fish can I put in a 40-gallon tank? | Aquarium Co-Op FAQs

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## How Many Fish Can I Have In A 40 Gallon Reef Tank? – Reef Keeping World

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## How Many Fish in A 40 Gallon Tank – Petnanny Store

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## How Many Goldfish in a 40 Gallon Tank?

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