You know jaws7777, I have kept clown loaches for 7 years,you have kept polys for what...4 years? Both of us are arguing that the fish we keep cant exceed some stated size by someone else....We're some professionals,lol
How the heck do we know any of it for sure unless we have kept either species for their full life span in the best possible conditions? Both species can live quite long..
For the lack of sufficient experience of our own, we just choose to believe someone else, be it a person or a scientific paper. Taking a side does not make it the true side. Only time will tell.
When it comes to the accounts of majority of people that have kept p.senegalus or clown loaches,it is clear that either species rarely if ever exceeds 12 inches.
So in essence, you are singing the same song I am,but none of us is a singer..
You know,I promise myself not to take it too harshly when my clown loaches grow into big 16-17 inch monsters...
I am going to have to hide after arguing the opposite for years...