Red Belly Pacu (Piaractus brachypomus) is a advanced-level freshwater fish that needs at least 400 gallons and 72-82°F. Pacu are sold small but grow to two feet or more and need a very large tank.

Care facts at a glance

Scientific namePiaractus brachypomus
FamilySerrasalmidae
OriginAmazon basin, South America
Adult size24 in
Minimum tank400 gallons
Temperature72-82°F
pH6.0-7.5
TemperamentLarge, skittish
Social behaviorSolitary
Swim levelMid
DifficultyAdvanced
DietOmnivore: vegetables, fruit, pellets
Typical lifespan15+ years

Quick tips

  • Not suitable for most homes.
  • Needs a huge tank.

San Diego water

Captive-bred stock usually adapts to San Diego tap water with slow acclimation. For best color and health, many keepers blend tap with RO/DI water. Learn the numbers in our San Diego tap water guide.

Before you buy

Make sure your tank is cycled (how to cycle a tank), check your numbers with the water testing guide, and use the compatibility guide to check tankmates. These are general ranges; individual fish and local water vary.

Find it at Pet Zone

Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.

Pet Zone Convoy

4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm

Aquascaping, planted tanks

Pet Zone Mid-City

4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm

Monster fish, koi