Assessment of fish swimming performance curves

This document provides advice on the completeness of the database, the scientific validity and limitations of the analyses and the results and conclusions associated with the fish 2 Central and Arctic Region Swim Performance Curves swimming performance curves. [...] In an effort to improve the consistency of the data used in the analysis, certain datasets that held individual fish measurement data were reformatted by grouping the data in a manner that was similar to other grouped datasets collected from the literature. [...] The objective of dividing the database from one large group into smaller ones was to improve the R2 value and standard error of estimate for the swimming speed versus fatigue time regressions until the point was reached at which limitations of the dataset exceeded any additional gains. [...] Similarly, the “Trout Group” consisting of 65 of the 76 species had R2 values of 0.354 when swim speed was expressed in body lengths per second compared to 0.730 when swim speed was expressed as a function of the square root of body length or as the dimensionless speed (including gravity in square root of length). [...] In fluid mechanics, the Froude number is relevant where the weight of the fluid is an important force, and is used to determine the resistance of an object moving through water, and permits the comparison of objects of different sizes.