Yo Yo Loach The yo yo loach, or lohachata loach, has the letter Y repeated along it's body, hence the odd name. Also, these are active fish and act a bit nutty, so maybe yo yo fits for a couple reasons.  These loaches are peaceful and hardy. Scientific Name: BOTIA LOHACHATA Origin: Indonesia Lifespan: 8 years Max size:  3 inches Food: Frozen, pellets, flake Shipping Size: Approx. 1 inches