I had recently bought 4 bristlesnose catfish at about 3cm and was keeping them in a breeding net in the tank to allow them to get to a size that they wouldn't get eaten and have somehow escaped. In the last 2 days they have all gone missing and my carpintis has stopped eating and doesn't really seem his self, should he be fine or will these guys cause some problems internally for him? and is there anything I can do to help him?