Thought id post up a thread as have no time to pm all who asked anyways basically to breed any l numbers u have to supply living conditions exactly the same as were your species originated from common sense . Were most go wrong they have the same temp and water current all year round leaving there plecos confused not knowing when the monsoon has arrived its simple every season or 3 months u arrange the living conditions to the season example summer warmer slower moving water like a drout occurring another example when the monsoon season has arrived cooler very fast moving water i use a waterfall as u need to make sure the flow is entering from the top not these silly common pumps near the gravel to low . Lastly with every season the water changes i can not tell anyone what the numbers are as i only know hemiancistris 128 200s and the other species in the same channel how i know well its not cheap i hired a scout from the district to run multiple tests the expensive part is i paid to watch it all live via videolink. Warning it will cost 3 times more than original quote as had a weak signal multiple times meaning unexpected extra extra live running time u pay by the minute both the connection and the satellite if anyone wants to do it i advise find others who also want to do it and every one chip in but make sure the group is after the same river as u are to investigate. Once u all set up just leave them alone i have hemiancistris in the same tank as less work monitoring or managing 2 tanks accurately. Just leave them alone my 128s have been fanning for almost 3 years now my female is smaller than anyone thinks and is still small i have dark fry also in my tank i suspect the 128s breed a first small batch but have no proof to back up my suspicion only way is to grow them which i have been doing for a while now still to early everytime i mimic the monsoon they all fan like crazy waterfall at top with speakers mimicking continuous thunder i went all out i also added a light to mimic lightning but not to bright as remember when its dark it is more bright can pm a mobile number if anyone wants to order one though light not included. All this taking pics business constant monitoring them is constant annoying them and yourself hemiancistris are shy they will usually live private life hidden . Hidden equals happiness so if they start fanning dont take a pic block off the tank so they cannot see u or u can't see them . U will not know they have breed untill u realise normal activity has changed . That covers what i can advise anything else i do not have evidence to back up the theory . I do like to help and usually do not say no i not all about hiding info like many unfortunately good luck to all and sorry to anyone i didnt reply to right away