I got my first axolotl a little over a week ago , he ate fine for me twice but then he stopped eating , he takes them & drops them or spits them out , he was eating red wigglers so I switched worms but there has been no change . Sometimes he is very lazy but he will swim sometimes , last night I noticed him swimming & it looked kinda fast . He does like to sit near the filter, especially if he’s swimming a lot that night . His gills & tail look fine , his water is a little warm because I am waiting for his water fan to come in the mail , but I have been cooling the water with ice . He is 5 months old & is a wild type if that helps .