If you want to swim in groups, you must raise more. This is based on the breeding density. The fish tank is too big, and the density of the fish is too low, so naturally they will not swim in groups. But too much density will also affect its growth, so we should keep as many fish as possible on the basis of maintaining health, so that more fish will swim in groups.
If the Baolian lantern fish live in a place where there is no threat, the fish often do not swim in groups, so you can put a few other fish in the fish tank to stimulate them. Usually choose short bream, Dutch phoenix or a larger immortal, can not use too fierce fish, such as tiger skin, this kind of fish easy to bite them.
If you are worried that the mixed culture will cause problems, you can also artificially frighten the Baolian lantern fish, as long as they feel unsafe, they will also start to swim in groups. Usually you can pat the fish tank, or stir the water properly, which will make them nervous and soon swim together. But don't stir the water too hard, or you might hurt them.
Usually when fish are hunting for food, they will enter the state of group swimming. If the feed they usually put in is sufficient, the fish will naturally not hunt for food, but at least reduce feeding, and their instinct will let them swim together to find food. It should be noted that occasional hunger can be, if not fed for a long time, it is easy to hungry problems.
