I'm curious.. do bettas sleep at all? ..and if so, is it at the surface or does it matter?
This morning, I saw Elvis parked at the bottom of the tank, motionless. Being the doting momma, I panicked and gave the tank a tap. Well, this got quite a swift reaction: Elvis not only jolted up and went flying, he shot out of the water and cracked himself on the lid hard enough to lift it a bit (it's one of those cheap affairs that's just a plastic 'plate' resting on top). Afterwards he sort of hung around the bottom, occasionally curling up on himself, and not even a freshly thawed bloodworm would tempt him back to the surface for long. I feel sooooo bad I'm hoping all he has is a bit of a headache..
last night he was his regular zippy self, and i did finally get him to eat a few pellets (his favorite treat, believe it or not). his last full water change was last week, and i'm planning a partial later this week. he's in a 2.5 galon, and i use a turkey baster to clean out his 'offerings' as often as i see them, so his water is near spotless.
i think he just got the proverbial horn blasted behind him as he was napping and then bonked his head on the top bunk
If he is in a 2.5 you are definitely not changing your water enough. I have mine in that much and have to do 50-75% with vacuuming the gravel every other day. If I don't, my female is fine, but male gets stress stripes and loses all his color. Just because the water looks clear doesn't mean it isn't packed full of ammonia. You don't need murky, smelly, green water for something bad to be going on.
And yes, they do sleep. My boy prefers to rest in his anacharis, my female likes to bury herself in the substrate. :)
every other day? i can see if i were keeping him in a 16oz cup, but not in a 2.5 galon tank. Elvis is a piebald, he actually loses color when i do water changes (hates them), and he hides for a day or two until he decides to forgive me. i do test all my tanks (four) twice a week (doting momma) and all remain clean. if i even think for a second that i'm imagining a teensy spike in ammonia, it's a 75-100% water change. that may be excessive to some, but my boys are healthy and active.
I'm almost 100% sure they sleep and I can say this pretty confidently.
I've got two tanks, one with boys and the other with girls. I had a rough week last week and got next to no sleep. First a stomach flu and now I'm just getting over bronchitis. Lol, lucky me, right?
Anyway... I'd walk around at night to get a drink or go to the bathroom and because I couldn't sleep, once in a while I'd go check out my fishies and watch them for a little bit. I was initially concerned since it looked like all of my females were motionless either on the bottom or in a plant or cave. I turned on the light on their tank and poof! All active and happy to see me, expecting food of course.
My boys do the same thing. If I sneak in and don't let them see me, they stay quiet at night and then when I turn on a light they swim up and go crrraaazy.
If you are testing the water using a liquid API test kit every day to every other day then you know how often the water needs to be changed. Overdoing water changes is unnecessary stress on your fish. I think you are doing just fine.
Elvis found a new favorite hiding place.. i discovered these tiny sherry glasses in storage a few months ago and thought they'd look cute as decorations in my tanks (2 in each). lately i've noticed Elvis nesting in one. i was worried for a bit that he'd not know the way out, but he shows me how clever he is by swimming in and out as if to say "look at what i found!"