Overview
The Chinese Algae Eater (Gyrinocheilus aymonieri) is a freshwater fish belonging to the family Gyrinocheilidae. It thrives at temperatures of 25–28 °C with a pH of 6.0–8.0, and requires a minimum tank volume of 150 litres. Known for its aggressive toward other fish as an adult; territorial, it is considered a intermediate-level species. Sold as an algae eater but becomes aggressive and useless for algae control as it matures. Water changes of 25–30 % weekly, stable parameters, and appropriate tank mates are key to long-term success with this species.
Scientific Classification
| Rank | Classification |
|---|---|
| Family | Gyrinocheilidae |
| Genus | Gyrinocheilus |
| Species | Gyrinocheilus aymonieri |
| Water type | freshwater |
| Native range | Southern Asia|Oriental (Indomalaya) |
Natural Habitat
Gyrinocheilus aymonieri originates from Southern Asia|Oriental (Indomalaya). It inhabits freshwater environments and is adapted to the water conditions found in its native range.
Appearance
Adults reach 15–28 cm in length. The body is freshwater and the species displays characteristic coloration suited to its environment.
Behavior
This species is described as a aggressive toward other fish as an adult; territorial. It does not school and can be kept individually or in small numbers. Activity level is moderate. Sold as an algae eater but becomes aggressive and useless for algae control as it matures.
| Trait | Value |
|---|---|
| Temperament | aggressive toward other fish as an adult; territorial |
| Schooling | No |
| Activity level | moderate |
Water Requirements
| Parameter | Ideal Range | Notes |
|---|---|---|
| Temperature | 25–28°C (77–82°F) | Use a reliable adjustable heater |
| pH | 6–8 | Avoid sudden swings |
| Hardness (GH) | 8–20 dGH dGH | Soft to moderately hard |
| Ammonia | 0 ppm | Any detectable ammonia signals a problem |
| Nitrite | 0 ppm | Toxic even at low levels |
| Nitrate | <30 ppm | Manage through regular partial water changes |
| Min. tank | 150L (40 gal) | Larger tanks are easier to keep stable |
Interesting Facts
- Chinese Algae Eaters have a modified mouth with a separate inhalant aperture so they can breathe while feeding.
- Adults often latch onto the flanks of flat-bodied fish (like Discus) and rasp their slime coat.
- The Gold Chinese Algae Eater is a colour morph that is more commonly sold than the wild-type form.
📋 Full Care Guide
Ready to set up a tank for your Chinese Algae Eater? The complete care guide covers tank setup, feeding schedule, common diseases, tank mates, and breeding.
Read Chinese Algae Eater Care Guide →Related Species
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This species profile was reviewed for biological accuracy and practical aquarium care guidance. For suspected illness or disease, test your water parameters first and consult an aquatic veterinarian if symptoms persist.