What fish is this?

[Tiger.]

It looks like some type of loach, but I'm not sure what kind.
It's really shy, around 2 inches long, and has been alive for at least 5 years.

 

[jake37]

Not sure it is a loach at all - a full picture would be more helpful....

 

[Tiger.]

 

[jake37]

Might be a dojo loach:
https://www.loaches.com/species-index/weather-loach-misgurnis-anguillicaudatus

 

[Tiger.]

It really doesn't look like a dojo loach, based on images from google. Plus, it's way smaller than 6 inches.