Fig. 8 Double logarithmic plots of fibre number and body mass for those fish actively producing muscle fibres. Symbols as for Fig. 7. First order polynomials were fitted to the data for the DB and PL morphs combined and the LB and PI morphs combined, which had the following equations. DB+PL morphs: log₁₀(fibre number)=log₁₀3.88±0.020+log₁₀(M_b)0.52±0.014 (r=0.96; d.f.=51; P<0.0001). LB+PI morphs: log₁₀(fibre number)=log₁₀4.24±0.031+log₁₀(M_b)0.33±0.015 (r²=0.96; d.f.=51; P<0.0001). Values are means ± S.E.M.