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Yes. It can seriously harm a goldfishes intestines if eaten and can cause fatal diseases to their brain or stomach if its fumes were inhaled. Green Algae is OK for fishes to be around but if excessive algae grows in tank then it could, too, be fatal.
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∙ 13y ago
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Why are common goldfish harmful?
They are not . I have kept shubunkins and goldfish and they are not harmful to man. They are only harmful to smaller fish such as minnows
Is brown algae helpful or harmful?
No, algae are not harmful unless it dies. (Found this answer on Yahoo.com)
Are plastic plants harmful for your goldfish aquarium?
plastic plants are not harmful to your goldfish aquarium.
What harmful microorganisms feed off of black algae waste?
arian nicholson arian nicholson
Do goldfishes eat algae?
Goldfish are omnivorous and will nibble on a bit of algae as a part of their diet just as people will eat vegetables as a part of their diet.
What can you put in a pond for algae with goldfish?
snails
Is water algae harmful?
Water algae can be harmful but most of them are not... Just dont eat any:) :) lol
What are some other kinds of fish that goldfish can live with happily?
Try bottom cleaners, algae eaters, black moors, and guppies for sure.
Will algae eaters eat my goldfish?
It depends, if your goldfish are smaller than your algae eater, and big enough to fit in it's mouth, then very much so. If the goldfish are small, but too big to fit into your algae eater's mouth, then he might just injure them. But your algae eater shouldn't be so small that your goldfish could eat it. The rule with fish that I always go by is, if it can fit into it's mouth, it will be eaten.
Will a algae eater eat a goldfish when they are alone?
NO, not usually.
Goldfish and hes sitting by your algae eaters?
No he's not.
Is the male goldfish black?
No, only black goldfish are black.
