Friday I got a few fish to start filling my tank, unfortunately most that I ordered arrived already dead from shipping so I was only able to get 8 neon tetras, 3 angel fish and 3 sword tails, 1 male 2 females. I have a 75G planted tank with a SUN-SUN canister filter. I cant really accurately give my water parameters because I can only get the strips, no where online will ship API master test kit here. I have very soft very acidic water. My water was cycled 1 week with a filter and the gravel from my old angelfish tank. First few hours my tiny angelfish ate all the neons, or I assume it was them. Both my female swordtails died, they looked fine friday but by saturday morning they looked like they were shedding, I added melafix but they promptly died Sunday night. Ive attached a picture, any ideas?