Saved A Fish From A Friends Small Tank Can You Help Tell Me What It Is

[Dibbs123]

Saved a fish from a friends tiny tank but worried to add to my tank as I think it will get to large and be uncompatiable with my other fish.

I have a 200ltr
1 BN Catfish
4 bronze cory
5 BW tetra
5 Harlequins
2 Angels
1 Honey Gornami
2 opaline gornami

Any help on what it is and how big it will get will be a help.

 

[Davo86]

answered on other thread, It is a common pleco of some sort