This document provides measurements for two Loch Rannoch ferox trout caught over multiple years, showing their significant growth in size and weight as they aged. The first trout was originally 44cm long and 1.02kg in 1998 at a minimum age of 10+, growing to 71cm long and 4.535kg in 2002 at age 14+, and 76.5cm and 4.365kg in 2006 at age 18+. The second trout was 52cm and 1.59kg in 1994 at age 9+, growing to 77.5cm and 6.46kg in 1998 at age 13+, and 79cm and 4.64kg in 2001 at age 16+.

1. Loch Rannoch Ferox Trout
An example of a Loch Rannoch Ferox
74.5cms / 5kg / 9+ years
37
47
60
66.5
+8
Ferox growth
4
10
16
25
30

2. 1998 - 44cms / 1.02kg / Aged 10+
2002 - 71cms / 4.535kg / Aged 14+
2006 – 76.5cms / 4.365kg / Aged 18+

7. 1994 - 52cms / 1.59kg / Aged 9+
1998 - 77.5cms / 6.46kg / Aged 13+
2001 - 79cms / 4.64kg / Aged 16+