What size is your tank?
What temperature is your tank?
Does your tank have a filter?
Does your tank have an air stone or other type of aeration?
Is your tank heated?
What tank mates does your betta fish live with?
-1 platy, 4 endlers, 4 ghost shrimp
What type of food do you feed your betta fish?
--BettaMin, Aqueon flakes that he steals, and blood worms occasionally
How often do you feed your betta fish?
--2x a day
How often do you perform a water change?
--1 a week
What percentage of the water do you change when you perform a water change?
What type of additives do you add to the water when you perform a water change?
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed?
--He has had possible tail biting for the last few weeks so his tail is shorter
How has your betta fish's behavior changed?
--Lethargic, stays in the plants and right near the top, doesn't swim around like he used to. Hasn't eaten the last 2 feeding times.
When did you start noticing the symptoms?
Have you started treating your fish? If so, how?
Does your fish have any history of being ill?
--Yes, he had ick and was cured of it a couple weeks ago. His behavior was normal all throughout his episode and treatment though.
How old is your fish (approximately)?
--Got him April 24th
Help please!! My betta is so lethargic... He just stays in his one plant all day and barely moves or breathes at all... He'll swim around occasionally, But not excitedly. The other fish and shrimp don't bother him and vice versa.
My water parameters are perfect and all other fish are acting normal.
One very strange thing happened last week though. I had 2 more platies that both dropped dead overnight with no apparent symptoms the day before. They were my hardy fish that never seemed to be affected by anything. I also checked the parameters and it was 0-0-0. But those two were also my largest fish. From everything I read, this pointed to a rapid drop in oxygen overnight since my tank is very heavily planted with lots of floating plants. My filter was also baffled overnight, so there was barely any surface agitation/air bubbles being pushed in. So my plants, which are constantly growing/taking over my tank probably ate up all the oxygen at night and the biggest fish are affected most by lower oxygen. That was my theory anyway. After that incident, I baffle the filter during the day and let it waterfall in at night, which puts in a considerable amount of bubbles since it's a relatively strong filter.
I've had no fish deaths since then, and I thought everything was going well. And now my betta is acting all weird. I don't think it's an oxygen problem because he breathes at the surface, right?
Something I read though about the plants at night, again, is that if they are absorbing a lot of oxygen at night it can crash the pH. Not sure if that's happening though, I suppose I could wake up really early tomorrow morning and test the pH though to see if it's changed. I would think my other fish would react to the pH drop too, but they seem fine.
I've attached pictures that I just took of him... I'm not too good at reading external signs so I thought maybe you guys could check him out.
What could be the possible reasons for his sudden change in behavior?