Good idea finchaser. I found a chart for blackfish. One thing I would add is that with the fish I have caught females of the same length tend to weigh slightly different from males.


Length
( inches )

3.0
5.5
9.0
10.5
12.5
14.0
15.5
17.0
18.0
19.0
21.0
22.0		 Age
( years )

1
2
3
4
5
6
7
8
9
10
15
20

Size:
The Tautog is a slow growing, long-lived species with individuals over 30 years of age having been reported. Larval growth rates have been estimated to be between 0.01 and 0.03 inches per day. Young of the year juveniles grow during the summer at a rate of around 0.02 inches per day. Juvenile growth rates have been observed to be higher in vegetated than in unvegetated habitats.

Average length after the first summer of growth is 2.9 inches; 6.1 inches after the second summer of growth. Adult growth is relatively slow and varies with the season. Adult male tautog grow faster in length than adult females. A reasonably accurate guide to tautog length at age is provided in the table to the right.

http://njscuba.net/biology/sw_fish_tog_cunner.html