OP: Can anyone tell me why my fish died? [posts pic of dead fish that's bloated with tattered fins, the dorsal fins have turned black]
Person 1: Well, the black coloration on it is a sign of ammonia burns.
Me: Agreed that it's likely a water quality issue. This species of fish DOES tend to get black coloration, but not on its dorsal fin like this,
(
Read more... )