Paradise Fish — Fish Profile
Macropodus opercularis
Quick Specs
| Adult Size: | 3.5" |
| Temperament: | semi-aggressive |
| Care Level: | beginner |
| Min Tank Size: | 20 gallons |
| Temperature: | 65-82°F |
| pH Range: | 6.0-8.0 |
| Diet: | omnivore |
| Origin: | East Asia (China, Korea, Vietnam) |
| Lifespan: | 6-8 years |
Overview
Paradise Fish are one of the oldest aquarium fish, kept since the 1800s. They are labyrinth fish related to bettas and gouramis, with beautiful blue and red striped bodies and long flowing fins. Males can be territorial. They tolerate cooler temperatures better than most tropical fish.
Care Guide for Paradise Fish
Tank Setup
Paradise Fish requires a minimum tank size of 20 gallons. Maintain water temperature between 65°F and 82°F, with a pH range of 6.0 to 8.0. A properly sized tank with adequate filtration and regular water changes is essential for long-term health. When housing Paradise Fish with other species, always choose a tank size that accommodates the most demanding fish in the community.
Feeding
Paradise Fish is a omnivore feeder. Provide a varied diet appropriate for omnivore species to ensure optimal health and coloration. Feed small portions 2–3 times daily, and remove uneaten food after a few minutes to maintain water quality.
Temperament & Compatibility
This species is classified as semi-aggressive. Paradise Fish reaches an adult size of 3.5 inches and has a care level of beginner. Always research compatibility before adding new fish to an established aquarium. Individual temperament can vary, so monitor new introductions closely for the first 48 hours.
Origin & Lifespan
Paradise Fish originates from East Asia (China, Korea, Vietnam) and has an expected lifespan of 6-8 years when kept in proper water conditions with appropriate tank mates and diet.
Compatible Tank Mates
🟢 Good Tank Mates
🟡 Caution Tank Mates
🔴 Risky Tank Mates
Compatibility Results for Paradise Fish
All 69 compatibility checks involving Paradise Fish:
Recommended for Paradise Fish
New Life Spectrum Community Formula — $11.99Small pellet for labyrinth fish community tanks
Expert Care Tips for Paradise Fish
- Mid-size tank: Paradise Fish needs 20+ gallons. Choose a tank at least 2× as long as the fish's adult size (3.5") for adequate swimming room.
- Warm-water species: Paradise Fish prefers 65–82°F. Use a reliable submersible heater with a thermostat — avoid temperature swings above 2°F per day.
- Adaptable pH range: Paradise Fish accepts pH 6.0–8.0. Most tap water falls within this range, but always test and acclimate slowly.
- Semi-aggressive temperament: Paradise Fish is generally peaceful but can become territorial. Provide ample hiding spots and avoid housing with fin-nipping species.
- Acclimation: Always drip-acclimate Paradise Fish over 30–45 minutes. Match temperature and pH gradually to prevent osmotic shock.