Question
QUESTION: I have been doing this experiment on ecosystems in my class. We FINALLY finished the experiment and took all the mosquito we used for the experiment home. I have with me a pregnant female living in a regular fish tank in my room with 1 alodia plant and one snail. I put this algae based food in the tank and now my fish is like...making these bubbles at the surface of the water and i don't know what that means! I know it gives live birth but does that mean anything? The water is also kinda foggy and i don't ..exactly know how to clean it. I need desperate help!!! Please please please respond and tell me what to do! I need your help!

ANSWER: Hi Kaitlyn,

Your fish is probably suffering from lack of oxygen.
Decaying matter generates methane and that is lethal for fish.
This was probably caused bay the algae based food.
Get your fish out of there as soon as possible.

Good luck


Carlo

---------- FOLLOW-UP ----------

QUESTION: Thanks a bunch for answering my question Carlo, but it has been...maybe about a month, and there isn't as much bubbles anymore, but my fish for some reason is no longer pregnant and it's tail is blackish on 1 side. I think it might have some type of FUNGI or something. I am also not sure how to clean the tank. Not only that but my snail hasn't moved since i put it in the tank and it has a scrunched up look to it. I am really sorry that i don't know as much as I should...but can you please please please help me again?

Answer
Hi Kaitlyn

Your fish probably has something called black spot.

Black spots are cysts of a fluke which lives on the intestines of
birds.
The fish will act as hosts carrier of them. They do not do much harm to them.
The eggs of the fluke pass from the birds via its feces into the pond where they infest snails; from these they progress to the fish where they bury themselves into the outer skin before forming a black casing around themselves.
If the fish are eaten by the birds then the cycle is complete.

Keeping water birds away from the pond and removing the snails will cure them.

Good luck

Carlo