I have a meyersi in a 55. He's very good at changing colors, is about 4 inches right now, and becoming more social. Used to spend all his time in hiding, but has recently begun making forays during the day. Loves zucchini, algae tabs, and blood worms.
This is not the same fish as the one with the common name of hillstream loach--there are 2 I see around here, and one resembles the chinese butterfly loach, the other is a butterfly pulcher. Not sure on that scientific name-it doesn't come up in Fish Base, Planet Catfish, or Google.