A random fish

Item #: SCP-XXXX

Object class: Euclid

Special containment Procedures: A solid titanium floor with solid concrete for the walls and a 5 meter high ceiling to avoid contact with the object. All times any personal must enter the containment unit will have to use Hazmat suits to avoid inhaling the corrrosive fumes this tree produces and A class gloves for collecting samples of hydrochloric acid. If any ruptures are spotted in the hazmat suit or gloves the personal will either have to request repairs or request an entire other suit or gloves. If any ruptures are not checked for and any fumes are inhaled the rest of the personal will have to escort the personal out of the cell to then notify staff to carry the body to an incinerator.
Description: SCP-XXXX is a Euclid class object that resembles a birch tree, but the tree instead of converting carbon dioxide into oxygen it instead turns it into some form of a corrosive fume that when inhaled will start overgrowing whats now called SCP-XXXX-1 and eventually SCP-XXXX-1 into another duplicate of the tree. Another thing to be noted is that when anything makes physical contact with its trunk or branches the tree will start matierializeing hydrochloric acid inside the personals lungs making them have severe lung ruptures and internal bleeding and will die very soon after contact

Also as that the "corrosive tree" has no roots it instead has a form of what seems to be an hydrochloric acid pool surrounding it that has other affects instead of normal complete discinagration it instead works as a fuel for the tree stated by one of the people who researched it and after a procedure that removed all of the acid which caused the tree to instead produce very dense smoke that would disinagrate any organic lifeforms close to it.

The final note about this tree is of its control over SCP-XXXX-1 when the being becomes a complete seed and which it plants itself in any material and creates a pool and in about 2 months will have become a complete copy of SCP-XXXX. Any and all instances of SCP-XXXX-1 at a "planted" state will have the seed dug up and incinerated while a group of suited personal patch the hole