[mrymar]

"Please practice catch and release"

 

[mrymar]

Sturgeon anglers don't generally weigh their catch. Trophy fish are generally defined by the fishs length.

50" Sturgeon qualify for Master Angler in Michigan catch and release division.
60" Sturgeon are pretty rare.

Here is a chart to estimate the weight of a sturgeon, if you measure its length and girth - http://www.michigan.gov/documents/dnr/StClair_weight_estimation_174130_7.pdf