Chinese algae eater

What a Chinese Algae Eater (CAE) Really Is

• A hardy, fast-growing freshwater fish from Southeast Asia.

• Often sold small (2–3 inches) but can grow to 10–12 inches.

• Not actually the best algae eater once mature.

Behavior

• When young: Eats algae regularly and is peaceful.

• When older:

  • Eats less algae and prefers prepared foods.

  • Can become territorial and aggressive, especially toward slow or flat-sided fish (like angelfish, goldfish, gouramis).

  • Known to sometimes suck slime coats off tankmates.

Tank Requirements

• Minimum tank size: 40+ gallons (larger if adults).

• Temperature: 75–82°F (24–28°C)

• pH: 6.5–7.5

• Strong filtration + good water flow.

• Provide caves or driftwood for hiding.

Diet

• Algae (when young)

• Algae wafers

• Sinking pellets

• Blanched veggies (zucchini, cucumber)

• Occasional protein (bloodworms, brine shrimp)

Good Tankmates

• Fast, robust fish that can handle some territorial behavior:

  • Barbs

  • Danios

  • Loaches

  • Larger tetras

  • Rainbowfish