hey im new to the site so bare with me,so ive had my 2 red cap orandas(ponyo and dandy ponyo is around 5 and a half inches dandy is 5) 2 fantails(tim 4 inches and origami 4 ) marty is a panda moor (4 and a half inches) and 3 weather loaches ive had roufous for about a 2 months he is 6 inches and ive had 2 baby ones arounf4 and 3 inches for 3 weeks recently both of the babies rear ends have been floating upwards and the other day the bugger out of the 2 was on the surface upside down but is fine now and is normal I was wondering what this could be? and with my oranda dandy is turning yellow and is acting as though he has something in his mouth like he is eating something.and my fantail is getting really fat and his scales are stretching on his belly and going grey is this a concern