| Re: Runny and cardinal schooling only during day. |
Subject: Re: Runny and cardinal schooling only during day. by fcmf on 14/5/2020 23:54:16 Good to read what you've stocked with - and lovely fish. Glad you're happy with the tank and enjoy what goes on in it. I have noticed that behaviour changes over the course of a fish's/shoal's lifetime and depends on many factors such as layout, decor, other fish (species and individuals) in the tank, and a lengthy list of others - every permutation has occurred at one time or another over the course of their lives. Rummynoses in particular are known to be shoalers. Cardinals are known to explore the substrate for food. At the moment, in your case, it might be that the fish feel more comfortable and confident to do their own thing after "lights out". The situation may change over time - there's never a dull moment in fishkeeping. I have some relatively young cardinals (8 months old) and they are still wary of me when I approach the tank, shoaling together. Once they can see me at a distance or if I sit still for a while beside the tank, they do their own thing, including lots of pecking in the substrate and on the wood for food. Their behaviour is changing too - the males have started taking an interest in the females and so pairing off into smaller groups, while the females are more concerned about fighting over food. You might find this https://www.fishkeeper.co.uk/stories/y ... uide-to-aquarium-lighting helpful. |