Hi! I have a 15 gallon tank with a female platy, female Dalmatian molly, and 4 rummy nose tetras. The platy has been in the tank for a year now and is used to our current lighting schedule (aquarium lights on for 12 hours). The molly and rummy nose tetras were added to the tank a week ago. It doesn’t seem like they’ve adapted to the light yet. When the light is on they swim rapidly against the front of the glass back and forth repeatedly. The molly looks erratic at times with the circles she does. But when the lights are off they explore the tank, swim through the plants, are calmer in nature etc. The store we got them at was extremely dark. I’m worried the light is really stressing them out, especially the molly. But also don’t want to mess with the platy’s routine too much. Any tips? Thanks!