9 month old platy with growth on head

[DonSolo220]

Can anyone help to identify this lump? From what I’ve been reading it’s cancer? And not treatable. She is 9 month old in a 10 gallon with 5 other 9 month olds and their mom which is about a year and a half, one Chinese algae eater and one nerote snail. All parameters are optimal

We just noticed the lump this morning and no other platy is affected. She is acting and eating normal so far.

Anyone have experience with this? Should we isolate?

also the mom has a small brown spot on her side that just appeared about a month ago. Anyone know what that may be?
Thanks for the help

the 9 month old is the bumble bee platy. The mom is the red wagtail. She mated with a bumble bee

 

[BigManAquatics]

No need to isolate the platy with the lump. Should be able to live a pretty decent life til either dies or can't hardly move or eat.