CheckMyFishTank

Paradise Fish care

Macropodus opercularis · Freshwater · Beginner level care

Paradise Fish, painted illustration

A hardy, colorful fish that likes cooler water but can be a bully.

Smallest tank20 gallons
Adult size3.5 inches
Temperature65 to 75°F
pH6 to 8
GroupFine on its own
TemperamentSemi aggressive
SwimsTop of the tank
Lives5 to 8 years
Watch for: Males fight, and they can pick on small, slow or peaceful fish.

Feeding

Twice a day. A small pinch they finish in about 2 minutes. Pellets, frozen foods, live foods.

Eats fish small enough to fit in its mouth.

Claims a territory and guards it.

Jumps. Keep a tight lid on the tank.

Has long fins that fin nippers target.

Good tank mates

Fish that pass every check with Paradise Fish in a 40 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.

Do not mix with

  • Cardinal Tetra: Cardinal Tetra and Paradise Fish need different water temperatures.
  • Green Neon Tetra: Paradise Fish grows big enough to eat Green Neon Tetra.
  • Ember Tetra: Paradise Fish grows big enough to eat Ember Tetra.
  • Rummynose Tetra: Rummynose Tetra and Paradise Fish need different water temperatures.
  • Tinfoil Barb: Tinfoil Barb grows big enough to eat Paradise Fish.
  • Celestial Pearl Danio: Paradise Fish grows big enough to eat Celestial Pearl Danio.
  • Lambchop Rasbora: Paradise Fish grows big enough to eat Lambchop Rasbora.
  • Chili Rasbora: Paradise Fish grows big enough to eat Chili Rasbora.

Questions

What size tank does a Paradise Fish need?

At least 20 gallons. Adults grow to about 3.5 inches, so plan for the adult size, not the size at the store.

What temperature does a Paradise Fish like?

65 to 75 degrees Fahrenheit, with a pH of about 6 to 8. A steady temperature matters more than hitting one exact number.

How many Paradise Fish should I keep together?

One is fine. If you keep more, keep one male, since males fight each other.

What do Paradise Fish eat?

Pellets, frozen foods, live foods. Feed twice a day: a small pinch they finish in about 2 minutes.

Sources

Checked against these sources on 2026-11-10. When sources disagree we use the safer number.