Originally Posted by
Sfojimbo
MiG-29/35 251
MiG-31 132
Su-24 274
Su-25 194
Su-27/30/35 429
Su-34 123
Wrt the MIG 29 it is even unclear if they are still in active frontline service and if so in which quantitites (according to some articles <100
https://www.edrmagazine.eu/future-of...35-in-the-ruaf, others stating that only one frontline unit still using it)
Wrt Su27 similar applies. According to <
International Institute for Strategic Studies (IISS) (2021). "The Military Balance 2021".
The Military Balance> only 101 Su-27 were in active Service with RuAF in 2021 which appears not to be unreasonable since only ~70 of the Su-27 were upgraded to the SM Version + 12 UBM + a few SM3 which could be considered adequate from an Avionics/weaponry perspective. The older non- upgraded Su-27 seem to have been retired from active Service.
Wrt MiG 31 it is a bit of a mixed bag. They are no true 'Fighters' but can still be a danger from the distance. That said with their Range and weapons range they are important for the defence of the vast land mass of Russia and thus will not be sent in great numbers to Ukraine since they would leave huge areas of Russia without cover if they were sent to Ukraine theater in quantities.
As said Su-24 and Su-25 you can ignore (and the Su-34 IMHO for the reasons mentioned).
So just looking at the gross figures alone doesn't paint a realistic picture.