ANNEX VI
- Water quality requirements for the grow-out phase of freshwater prawn Macrobrachium rosenbergii
- Some collected data on the field

ITEMS	Usual prawn requirements	Beausejour river	Gread river	Antoine river	St-Francis river	Little Bacolet river
Temperature °C	25–30	27	26,7	31,6	26	26,3
Salinity (‰)	< 5	0	0	0	0	0
pH	7–9	7,9	7,7	7,5	7,6	7,7
Dissolved 02 (mg/l)	> 4	-	8	saturation	saturation	saturation
Hardness (mg/l CaCo₃)	20–150	210	85	165	64	121
Alkalinity (mg/l CaCo₃)	20–150	85	73	135	53	118

Source : Central Water Commission and data collected on the field during the mission.