Why have my masculine guppies losing their color?

i have three male guppies and they have adjectives lost their color and i added Fungus clear to my bowl a few days ago and i'm not sure if thats the way to turn. can someone please help me. thank you

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bad water power or they are just scared

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if they are in a bowl, they are probs over crowded and have desperate water quality

buy them a tank
no fish should be kept contained by a bowl

heater and filter? well. guppies don't need a heating system but they do better with one

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Answers:    scared, water cleanness or some fish do essentially

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