Hi. I have a 10g freshwater aquarium that I have had set up for about 2 years. Not sure what all you need to know to help me, but here is what I have in my tank:
3 Zebra Danios
3 Black Fin Tetras
1 Apple Snail
Recently (about two months ago), I started having issues with algae. No idea what could be causing it but I am working on that one. Using frequent water changes, tried taking everything out and soaking in bleach water, there is no sunlight anywhere near the tank, the hood light only stays on long enough for them to eat. Using "algaefix" right now with so so results. Did a water change last night and noticed the water was very cloudy, which almost never happens right after a water change. I have had the charcoal filter out of the filter for the duration of using the algaefix so the only filter in there right now is the white one which does not ever need changing. I did take it out and rinse it, as it had algae on it. I have heard that this can cause a restart of the cycle, not sure on that one or even if it would do so this fast. Sorry, I am not up on all the terminology...
Anyway, this particular danio I have had for close to the two years I have had the tank up. He has always been "chubby" , but this morning he was VERY fat. He is swimming around like he's scared, and his scales on the top are sticking out like he has a buzz cut or something.
I don't know if something happened with last night's water change..we did it the same way we always do..or if this just happened. I am pretty sure it is dropsy. I don't have a way to get an image for you right now, but may be able to later this evening. My other fish are acting weird as well. Not eating, swimming around frantically, hiding. I don't know if this has anything to do with either the algae..which is not at all noticeable as of now. Just a very minute amount on the filter, which I cleaned off, or the algaefix.. which I put some in last night after the water change, or what is going on.
Also, my Apple snail started floating on top of the water last night. Something I've never seen him do in the year I have had him. I was told to take him out and "smell" him, he didn't smell bad and at first when I touched him he didn't jump or go back in his shell. However when I was taking him out to "bury" him, he did. As if he knew what I was doing lol. Anyway, he finally went back to the bottom of the tank this morning. I was worried. It seems as if everything is going wrong with my tank all of a sudden and I don't know what happened.
I hope someone can help me here. As I said I have had these guys for a long time and I am kind of attached to them. :)