200 Table 17. Calculated respiration rates for different length classes of Mosquitofish. Length Class mm Calculated Respiration Rate mg 02 /mg dry weight fish 5.57 5.03 4.55 4.11 3.71 3.35 3.03 2.73 2.47 2.23 2.02 1.82 1.65 1.49 1.34 1.21 1.10 0.99 0.89 from von Bertalanffy's coefficients for a simi (1951) equation: a lar-sized species. Wb using Hoss' (1968) W is wet weight. bln respiration, oxygen consumed (mg) is approximately equal to organic matter consumed (mg dry weight).