@pfara no worries.
I measured them today. The largest is over 7 inches and the others are about 6 inches. The red one has turned three and the other two will be three in a few weeks. I forgot to weigh them but they are quite solid. It appears they are all female which I think is great. This way they can all stay together and I don't have to worry about them breeding.
Nice I want my reds to be all female for the same reasons. Happy belated and happy pre-emptive birthday to your girls!