Perna viridis
•Temperature:  26o-32o C optimal
•LC50: 10o and 36o C after 2 weeks exposure
•Salinity:  27-33 ppt, can tolerate 20 ppt for short periods (rain, floods)
•Depth: surface to 10 m
•Reproduction: dioecious broadcast spawner, free-swimming 2-3 weeks, sexually mature 2-3 months (~20 mm)
According to the literature, these are some of the conditions where green mussels live in their native range. The temperature is 26-32 C.  The LC50 is 10 and 36 C after 2 weeks exposure (50-96).  Salinity is 27-33 ppt but can tolerate 20 ppt for short durations. Marc Blouin has documented even lower salinity measurements where green mussel exist in the Alafia River. The temperature and salinity tolerances vary somewhat in the literature.    I do not know how many eggs are produced.