Terms

1. Epilimnion : Upper surface water temperature.
2. Hypolimnion: Bottom water temperature.
3. Thermocline: Average temperature of the water column.

• > 8 Dissolved oxygen causes gas bubble disease for hatchlings.

• In Pen fish culture, both sides are open and the side section is closed.
• Oryza japonica is suitable for rice fish farming.
• Epizootiology: Study of distribution and pattern of a disease or infection in host or in vectors.