The size of individual animals may differ due to various factors like diet, season length, CB, WC, LTC, etc. you can take a guess, but that's about it.
As far as (his) gender, send us a pic of his tail, from underneath, and we will determine that for you
The tort looks female now with that tiny tail, but all Russian torts have small tails when they're young making them appear female. At under 4" scl, your tort is likely too small to determine sex. I'd wait until its at least 5" before calling it.
Sent from my ADR6425LVW using TortForum mobile app