Weight-length data from 50 populations of smallmouth bassMicropterus dolomieu(N= 6,731) in 19 states were used to develop a revised standard weight (WS) equation for smallmouth bass. The regression-line#x2013;percentile (RLP) technique was used to develop the proposed 75th-percentileWSequation from length-weight regressions for individual smallmouth bass populations. The proposed Ws equation, log10WS(weight, g) = #x2013;5.329 + 3.200 log10L(total length, mm), is valid for fish 150 mm long and longer. The English-unit equivalent, log10WS(lb) = #x2013;3.491 + 3.200 log10L(total length, in), is valid for fish 6 in long and longer.
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