I'll make an attempt for a review off the top of my head.
The Clarke after market plastic tank for the TW 200 only increases the volume to 2.8 gallons
The Clarke tank for the xt350 is larger and relatively easy to adapt - somewhere around 4.0 gallons.
The stock tank for the xt350 is larger (3.14 gallons) and easy to adapt.
The stock tank for the xt225 is larger and has been adapted successfully. 2.3 gallons
The Clarke tank for the xt225 is also an option. 4.1 gallons
The xt 500 tank has been installed on the TW200 and is nearly identical to the xt350. But be careful the older bikes had a completely different tank that is longer and not suitable. Its probably about 3.14
Rather than guess at the gallons for each of these I'll finish this message and look them up or hope that someone will provide them before I edit the post. Posts exist for facilitating installation of nearly all of these tank (here on the forum).
Suerte. Si tiene preguntas, estamos aqui para servirle. Tomas
A quick search shows that the xr650 L tank has been used at 5.8 gallons; and the xt500 tank was only suitable in later models that had a 3.17 gallon capacity.
You can check years that have the same tank by doing searches on Bikeez. If too tanks from year to year have the same capacity you can probably figure that Yamaha did not change them.