I am basing this on what I did almost 20 years ago with LMB and its hybrid fed a range of forages involving minnows and crayfish. The forages where all about 60 percent moisture as consumed. On a dry weight basis, thee forage protein content ranged 60 to 80%. The higher protein percentage was associated with lower fat levels and higher moisture levels with the latter approaching 80%. The bass could compensate to a large degree for the moisture content in the forages to make so their dry matter consumption rate was near what you see with consumption of pellets. The bass could get really big bellies eating the forage but the real kicker is the bass appear to me markedly more efficient at converting forage dry matter into bass growth than they were with pellets. Pellets way cheaper though.
Bluegill will be the same.
Low fat content in forage, just theory, can be what really limits growth of the predator.
