We have a tank with warm water fish and a couple of plecos. The male is a Bristlenose en the female somewhat light brown and smaller. Since last thursday we have 25 babies and I put them in an other tank. They get cumcumber and wels chips and frozen artemia. The first 3 days they were very active and now they are hanging all neer the surface of the water and don't move a lot. Not even for eating. I don't know what is wrong. All help is welcome. The 2 babies I left in the big tank are fine. I refreshed the water from the breeding tank yesterday. I put a bubble device in the breeding tank for more oxygene.