My roommate took off to go home for Christmas and asked me to look after her betta, which she brought up to the living room before leaving. The bowl was practically covered with algae! I took it upon myself to change the water and do a thorough cleaning.
I noticed right off that the fish was very easy to catch and put into the bowl of water I'd set aside, which I thought was very unusual. Shouldn't he be darting about, trying to escape the net? I thought maybe once I'd finished cleaning his tank, he'd be happier and more lively.
Anyway, I must have cleaned, rinsed, and drained the gravel about five times before the water ran clear and not green
, I thoroughly cleaned all the fake plants (they were covered in green, green, green), made sure to put some of the old water in the new bowl and cleansed the whole thing of chlorine. I even did a water test to make sure the ph levels and such were normal (they were), and then gave the fish plenty of time floating in his plastic bag to acclimate to the new water.
That was yesterday, and he didn't eat any of the pellets I gave him last night, or any of the pellets I gave him this morning. He just sits there, floating near the top of his bowl, and he has to be compelled to swim. When he does, it looks as if it takes a lot of effort.
I see no visible signs of any disease...he looks pretty normal, though his color isn't as vibrant as it should be. Could the high algae concentration have made him sick? What should I do? I don't want the poor fish to die because of my airhead roommate's neglect!