CheckMyFishTank

Chinese Algae Eater care

Gyrinocheilus aymonieri · Freshwater · Intermediate level care

Chinese Algae Eater, painted illustration

A common algae eater that becomes aggressive and stops eating much algae as it ages.

Smallest tank80 gallons
Adult size11 inches
Temperature72 to 79°F
pH6.5 to 7.5
GroupOne per tank
TemperamentSemi aggressive
SwimsBottom of the tank
Lives8 to 10 years
Watch for: Aggressive when adult and may suck on the sides of slow fish. Not a good algae eater.

Feeding

Twice a day. A small pinch of flakes plus fresh vegetables or an algae wafer left in for a few hours. Algae wafers, vegetables, sinking pellets.

Claims a territory and guards it.

Good tank mates

Fish that pass every check with Chinese Algae Eater in a 160 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.

Do not mix with

  • German Blue Ram: German Blue Ram and Chinese Algae Eater need different water temperatures.
  • Discus: Discus and Chinese Algae Eater need different water temperatures.
  • Demasoni Cichlid: Demasoni Cichlid fight their own kind. Keep only one per tank.
  • Gold Nugget Pleco: Gold Nugget Pleco and Chinese Algae Eater need different water temperatures.
  • Clown Knifefish: Clown Knifefish grows big enough to eat Chinese Algae Eater.
  • Silver Arowana: Silver Arowana grows big enough to eat Chinese Algae Eater.

Questions

What size tank does a Chinese Algae Eater need?

At least 80 gallons. Adults grow to about 11 inches, so plan for the adult size, not the size at the store.

What temperature does a Chinese Algae Eater like?

72 to 79 degrees Fahrenheit, with a pH of about 6.5 to 7.5. A steady temperature matters more than hitting one exact number.

How many Chinese Algae Eater should I keep together?

Keep only one. Chinese Algae Eater fight their own kind.

What do Chinese Algae Eater eat?

Algae wafers, vegetables, sinking pellets. Feed twice a day: a small pinch of flakes plus fresh vegetables or an algae wafer left in for a few hours.

Sources

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