Introducing guppies to a betta tank is less like a blind date and more like a hostage negotiationone wrong move, and someone loses a fin. First, quarantine your guppies for two weeks in a separate tank. Then, rearrange your bettas tank completely; this breaks his territorial claim.
Guppy Fish Tank Care: Description & Life Span of the Peaceful Guppy. Poecilia reticulata is most commonly known as the guppy fish, and theyve earned the nicknames million fish and rainbow fish for good reason. In the wild, male guppies sport random spots of color.
Just a 5 minute video of my community breeding tank. There are around 80+ guppies at 3 different generations. Bronze corydoras are also breeding in this tank.

Conditionally Safe Guppy Tank Mates. (Tank Size, Ratios, or Monitoring Required). These tank mates can work well with guppies, but only when specific conditions are met.
Tank Requirements. AI modified. Read it.Tank size matters more than you think. Find out how much space guppies really need, and how overcrowding can lead to stress and disease.

Minimum Tank Size A 10-gallon tank is recommended for a small group of 5 to 6 guppies. Ideal Tank Size A 20-gallon tank provides better water stability and space for breeding. Larger Tanks Bigger aquariums are easier to maintain because water parameters remain more stable.
Guppy Characteristics and Requirements. Ideal Tank Size for Guppies. Setting Up the Perfect Guppy Tank. Choosing the Right Aquarium. Essential Equipment for Guppy Tanks.

Furthermore, visual representations like the one above help us fully grasp the concept of Guppy Community Tank Size Requirements.
Top 10 suitable 10 tank mates of guppy fish. Choosing a couple of perfect tank mates for guppies is not hard. Hundreds of websites will recommend the same fish as their tank mates mostly. However, they should be chosen according to their size, temperament, appetite & tank size.