Tiger-striped Silver Edge Fish What happened to Xiao Jinlongs fins suddenly turned black today？

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　　Tiger-striped Silver Edge Fish What happened to Xiao Jinlongs fins suddenly turned black today？As shown in the figure, solve the puzzle

　　Peak qq Say: This is a developing background color, normal.
Yuyou 13658377363 Say: Water quality problem
Yuyou 13996378160 Say: Check the pH to estimate the acid
Yuyou Hualong Project Say: The main problem is water quality
Yuyoukulou0723 Say: Water mold
Yuyou13525094018 Say: Poor water quality
Yuyou Jingshou meets love Say: There should be something wrong
Yuyou Fulongxin Say: There is a problem with water
Yuyou Yanminweixin Say: Dont understand, help top Dont understand, help toplive aquarium plantsArowana potassium hyperammonium poisoning handstand%Sambo feed"Qingzhou Jinlong Feed,Qingzhou Jinlong Feed Co., Ltd.?Shandong Jinlong Feed Co., Ltd.)Arowana poisoning with potassium permanganate%Does Arowana need oxygen?^Introduction of Qingzhou Jinlong Feed:Do he eat raw meat?&

ASIAN AROWANA：

That039;s another huge clown loach .....

How to climatize your fish in another ta

Added a Fourth Henlei

Cute n fat NGT

Hongyun is the first grouper