no its not a hillstream loach, i saw them in P@H (not usual practice to shop there but i was passing lol) and saw they had them, the guy said they where bumblebee plecs, they where quite shy, ones they had where about 6" so im guessing they grow massive, looked similar to a common plec but had large yellow and black patches, they looked really nice i must say and ive never seem anything like them before!