I havn't seen my baby pleco for 3 days, i did a 50% water change on sat, removed some of the rocks and plastic plants and gave them a clean as there was a lot of brown algae, i thought i had lost the pleco but later that night he came out for a few minutes but i havn't seen him sinse, i am worried that he maybe dead but dont want to poke around too much incase he's just hiding (i don't want to upset him more). He's so tiny that he is easily hidden but last week he was quite sociable and was happily going around the inside of the glass munching on algae. Do they get upset easily? have i upset it by moving things around and cleaning the rocks? or do you think he's dead?