Tilapia :

There are many tilapia species, 
Most common in indoor Aquaculture is the Red and Grey tilapia
Tilapia is common known and consumed world wide.
Lives in fresh water, but there are marine tilapia suitable for aquaculture
In the indoor Hesy farms, the tilapia grows till market size, average 500 gram,

  

Possible set up for a 30 tonnes tilapia system

Price for technical installations in Euros on request
Required building  350 m2
Estimated electricity demand for fish production 15 kW/h
Average feeding 100 kg/day
New intake water  25 m3/day 

Possible set up for a 60 tonnes tilapia system

Price for technical installations in Euros on request
Required building  600 m2
Estimated electricity demand for fish production 30 kW/h
Average feeding 200 kg/day
New intake water  50 m3/day 

Possible set up for a 100 tonnes tilapia system

Price for technical installations in Euros on request
Required building  1000 m2
Estimated electricity demand for fish production 50 kW/h
Average feeding 350 kg/day
New intake water  90 m3/day 

Possible set up for a 250 tonnes tilapia system

Price for technical installations in Euros on request
Required building  2200 m2
Estimated electricity demand for fish production 125 kW/h
Average feeding 875 kg/day
New intake water  220 m3/day 

No rights can be derived from above mentioned figures