Oscar
Astronotus ocellatus
Difficulty (1-5): 3/5
Description
Reaches thirty-five centimetres, recognises its keeper and rearranges the tank at will. Needs a very large tank and heavy filtration.
Water test requirements
- pH: 6 – 8
- Temperature: 23 – 29 °C
- General Hardness (GH): 3 – 20 °dGH
- Nitrate (NO3): ≤ 40 mg/L