Whoa, that sucks.
Our's are Dojo loaches. They are also referred to as Weather loaches because they can detect changes in barometric pressure and become a bit cuckoo with big changes in pressure. I guess they're supposed to be illegal to sell here because they're supposed to be an invasive fish. I do not understand this as they sometimes carry them at Petco. We ended up with three because Katherine originally bought two. They were very small and one managed to jump out of the tank. Interestingly, it had jumped out of the tank on a night when it stormed heavily ( big barometric swing). The following day we found it on the floor and then couldn't find the other one either. So, Katherine went and bought two more. About four days later, I noticed there were three of them in the tank. We got a kick out of it because Katherine is always thinking that whenever a fish is missing it's dead.