Are the blood streaks I'm noticing in the fins and tail most likely
caused by septicemia or some other bacterial infection? If so, do I
need to do something more than a Tricide-Neo dip for that? My
understanding is that T-N doesn't help with systemic bacterial
infections. Or, can stress also cause a fish to bleed like that?

I'm dipping for the second day in a couple of hours. Today the fish
seems less mad at me and quite relaxed. It's active and the wound area
looks less raw. It's more "faded" red than "I'm going to bleed all
over you" red. I think the eye might be a little better too. There's
like a growth, almost like a bump of skin, on the outside of it in the
center. Maybe a bacterial infection? The eye seems to be working fine
otherwise. Slime coat is good, and has been from the beginning.

My biggest concern right now is the blood streaks I'm seeing in the
extremities. I'm hoping that the fish isn't failing internally while
I'm treating its external issues.

Water is at 78 degrees, .34% salt.

By the way, I never mentioned how I caught the fish. I used lawn
stakes to anchor one end of the bird netting along the shore, then
sunk it across the pond with small stones and waited for the fish to
cross over so I could scoop it up. I spent maybe 2 hours setting all
this up and was patiently waiting and admiring my foolproof trap when
the fish got spooked by me and went into the same corner where I
originally rescued it. In the end, I caught it with a hand net.
Figures.

Dave