Wish these weren't illegal in the uk.
When I bought mine almost 3 years ago..she would be active. I also had baby Pleco..and "baby" grew in over a year to 8" and I think would go after the yellow colored Ancistrus with some real aggression. She became very shy ever since. I had to sell the big Pleco as it also wanted to dig tunnels in my potted big aquarium plants,ripping them up while doing it.My Ancistrus is out all the time. I'm looking at her as I type. If you patiently hold a courgette in the water, she'll attach herself to your hand.
Its only if the aquarium is large enough or crowded. Its like 2? No way. 20? ok...get a loan for 20 long finned red Ancistrus from the bank.Ancistrus has gone back to her perky self. She couldn't care less about corys or raphaels, but doesn't seem to like conspecifics. On the pleco Facebook group, I'm baffled by people's photos of multiple pleco species sharing courgettes like a loricariid commune. How do you get them to do that and not try to kill each other?