AquaStocker

Paradise Fish Care Guide

Macropodus opercularis · Easy care · 20 gallon minimum

Updated June 2026
By the AquaStocker team · How we source our data
Paradise Fish (Macropodus opercularis)
Photo via Wikimedia Commons 📌 Save

A stunning but feisty labyrinth fish that tolerates cool water; best kept alone or with tough tankmates.

Adult size4.0"
Min tank20 gal
Temp61–79°F
pH6–8
TemperamentAggressive
SocialSolitary / pairs
Care levelEasy
DietCarnivore

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How big does a paradise fish get?

A paradise fish (Macropodus opercularis) reaches about 4.0 inches as an adult. Plan tank size and tank mates around the adult size, not the small fish you buy at the store.

Tank size & setup

Give a paradise fish a minimum of 20 gallons, with water at 61–79°F and a pH of 6–8. As a easy-care, carnivore species, a stable, cycled tank with the right diet keeps them healthiest.

Good tank mates

Pair a paradise fish with peaceful species that share its temperature and pH range. Compatible options include:

About the paradise fish

The fork-tailed paradisefish, or paradise gourami, is a species of pelagic, long-finned freshwater ray-finned fish in the family Osphronemidae, found in most freshwaters of East Asia ranging from eastern China down to northern Vietnam. This anabantiform fish can reach a standard length of 6.7 cm, though most are only about 5.5 cm . Paradise fish were the second Chinese ornamental fish introduced to the West after the Goldfish, and the first freshwater tropical fish successfully bred in captivity in Europe, having been imported 1869 to France by the French aquarium fish importer Pierre Carbonnier in Paris. The paradise fish is one of the more aggressive members of its family. It is more aggressive than the three spot gourami, yet less pugnacious in nature than the less commonly kept combtail.

Recommended gear for paradise fishs

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FAQ

What size tank does a paradise fish need?
At least 20 gallons. Bigger is always more forgiving for water quality.
Is the paradise fish good for beginners?
Yes — it's a easy-care species that tolerates typical community conditions.

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