| Real | TGC | | Temperature growth coefficient |
| Modelica.SIunits.MassFlowRate | O2rate | | Respiration rate in kgO2/kg fish/s |
| Modelica.SIunits.MassFlowRate | CO2rate | O2rate*44/32 | CO2 production rate in gCO2/kg fish/s |
| Real | mortality | | Mortality rate, percent dead per production cycle |
| Real | T1 | | |
| Real | T2 | | |
| Real | Td | | |
| Real | IBW | | |
| Real | protein | | Protein weight fraction |
| Real | carbohydrate | | Carbohydrate weight fraction |
| Real | fat | | Fat weight fraction |
| Real | ash | | Ash weight fraction |
| Real | water | | Water weight fraction |
| Real | N | 0.16*protein | Nitrogen |
| Real | P | 0.20*ash | Phosphorus |
| Real | COD | (0.528*protein + 0.4*carbohydrate + 0.78*fat)*(32/12) - inert | |
| Real | inert | | Inert |
| Modelica.SIunits.Density | bodyDensity | 1e3 | Fish body density |