recently in my old 30G i hadnt been seeing much of my betta and he was just hiding all the time, i would guess he just over 2 years old....so i decided to move him to a new smaller 18G more comfortable home then wot he was in with calmer less tank mates on tuesday, he seemed to be fine swimming around and eating but he looked a bit thin and worn, and this morning i came down and couldnt see him, so i lifted up this big castle and he sorta came floating out, he still alive but looks all brown and his fins look in really bad condition, i take it he hasnt been comming up for air...and now he's just floating in the corner and i dont know wot i can do.....does he know his time is up...or did i do something wrong??? 
