A customer brough this in tonight. He's 4" Apparently, he was getting mean with the community fish. I told him to leave it in the bag, he's getting a bigger home.
I think yours is a yoyo loach. It looks like mine as well and as about 4 inches long after one year. Its best to keep them in group of six so they won't hide under the rock all the time. They are actually very social. I only feed them spirulina pellets after soften it.
Oooh and then the goverment can beg and plea with Wurm to repopulate the wild population. And then Wurm will politely say "No then JD-Man will have waaay more loaches than me"