Depends which species of chanchito you're talking about, it's a common name applied to a number of cichlid species. I have a couple dozen juvie (~2") Australoheros oblongum growing out in a 75, and it looks like a pair has formed. They're the smallest of the group, males max out between 4-5". females 3". Very mellow fish, mix well with anything too large to eat that won't beat the snot out of them. Juvies would be fine with BA tetras, but a full-grown male would probably eat them.
If you want some shipped shoot me a PM.