I've lost three fish in 2 days

[TomO]

Since Sunday morning I've lost a dwarf Gourami, and adult Angel and a cory. My parameters aren't bad: pH is 7.5, Nitrites are .25 ppm, Nitrates are .5 ppm, KH is 180 and ammonia is .25 ppm. Those are the only tests I can run. I have test strips and an API Master kit. My weekly water changes occur every Saturday. My temperature is 76. This has only occurred in one tank. It's a new 75, It has 5 cherry barbs, 4 harlequin rasboras, 5 brilliant rasboras, 3 angels, 2 corys, another dwarf gourami and a dojo loach. Yesterday the dead angel didn't eat, and her belly was rounder than normal, but when I fished her out of the tank I gave it a little squeeze and eggs came out. The overall appearance of the water is a little cloudy. But I thought since it was a new tank this was normal.

[FrozenFins]

Your ntirtrites and amonia are a bit high, they should be at 0. When did you stock this tank? when did you get the dead fish?

[Colu]

Nitrites and ammonia are to high and  are poisoning you fish  nitrites and ammonia should 0  do small water changes daily and cut back on feeding  API nitra-zorb filter pouch to put in filter will help low nitrites and ammonia

[TomO]

The fish have been in the tanks for about 3 weeks, they have even spawned once.

 

[Colu]

You have put to many fish in the tank to quickly the tank is still cycling need to get ammonia and nitrites down as a priority or you will loses more fish

[TomO]

Should I make the angels to a different tank?

[Colu]

You can move some  fish to lower the  bio load 

Edited December 15, 2020 by Colu

[JettsPapa]

I can't help but wonder if something else is going on.  While I agree they should be at zero, 0.25 ppm each of ammonia and nitrites shouldn't be killing your fish.

[TomO]

There isn’t any other marks, missing scales or anything like that.