Thank you ^^
Alright, it looks like his missing scales are from him rooting around under rocks for stuff, getting stuck, then flailing for awhile because... he is not very smart? Have removed pokey pumpkin cave, need to find a safer one, but current set up is:
Is it normal for betta to be somewhat hyper? He has bouts of peacefulness, but lots of 'charge at walls of tank and swim manically' periods. Turning off the aquarium lights helped a bit, he could still use some Ritalin. My friend keeps hers in a large fishbowl and he apparently sits quietly. ?_?
Tetras never gave me this much trouble. XD