Take it easy, don't have a hissy-fit (get it?). "Survival of the fit enough" is redundant. God created ALL his creatures to be "fit enough". Just because one kind of animal outlives another kind, or one other kind eats the other kind, or even that one kind has a specific anatomical feature that you believe and (erroneously) claim that they "don't need", is not evidence for Darwinian Evolution Theory ™️. Those arrogant "scientists" said the same thing about the human appendix claiming that it served no purpose, only to be proven dead wrong later, once it was discovered, they realized that the appendix is actually an important part of the immune system (not "vestigial").
It almost seems as if God knew what he was doing...
Men have nipples and some fish may have no eyes... Big deal. I like my nipples, because God put them there. Blind fish with eye sockets are no quirk of nature, nor are their eye sockets a "remaining vestigial structure". Perhaps God saw to it not to give those particular fish eyes because they live in the deeper parts of the ocean, where the pressure is so great that if they did have eyes, they would simply explode at such tremendous pressure! Many kinds of deep ocean creatures have no eyes, this is no evidence of evolution because the fish is STILL a fish. If it lives in the water, has fins and scales, and brings forth after its kind (fish kind) it's a fish, period.
Humble yourself, and ask the Lord yourself instead. Say Lord: "WHY don't these fish have any eye sockets?" He'll show you.
Don't ask: "How can I use these strange, funny lookin' fish to prove my evolution theory?"
God is leaving the scales on your eyes so that you cannot see the truth, because you hate the truth. The truth is hate to those who hate the truth...
Seek the Lord while he may be found...