Nope, ISFp = ISFJ and ISFj = ISFP, just look at the definitions of the subtypes and you'll see it because of the functions. Also, ISFP would be the worst choice for a ENTP according to socionics.

I'm gonna be serious here. I'm ESI in Socionics (confirmed with a friend of mine actually trained by Gulenko, for real). I've met one real ENTP in the wild, he acted nothing like the "ENTPs" on Reddit and he was pretty nice to me actually. ENTJs I've met though... ENTJs are control freaks and sadists, I actually had one obsessed with me and abused me when I was a teenager. All you have to do to scare them off is attack them back, attack them hard, they're bullies who can dish it out, but they can't take it. I could NEVER see myself falling in love with one of them EVER. I have one close friend who is an ENTJ and even then, it's not sexual, and he still pushes my buttons because of his "Victim" romance style. Like MBTI predicted, my best match is ESFJ, followed by ENFJ. Socionics compatibility is bullshit, don't worry about it, just be with people who make you feel good.